Tag: Bitcoin Exchanges
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Provable Solvency Report #71 – February2020
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 71th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,682.9458 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,683.4739. XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #71 (February 17th, 2020):
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20200217.txt
SHA-256 Hash of the Provable Solvency Report: 8AB00AB9181600EC44FA6972B267337F218D1D5E10CFBB091F31B9CFB6E7F802
Transaction ID: 8ea4cdd4a9759846c1ed7a4ba99fdd280b4ca9c69c7d3a298909549df8b12548
View the transaction here:
https://explorer.bitcoin.com/btc/tx/8ea4cdd4a9759846c1ed7a4ba99fdd280b4ca9c69c7d3a298909549df8b12548
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20200217.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
https://explorer.bitcoin.com/btc/tx/8ea4cdd4a9759846c1ed7a4ba99fdd280b4ca9c69c7d3a298909549df8b12548
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1581935015) and your API authentication cookie.
Example (Linux):
timestamp: 1581935015
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15819350159BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
Provable Solvency Report #70 – January 2020
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 70th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,815.4219 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,819.3338. XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #70 (January 20th, 2020):
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20200120.txt
SHA-256 Hash of the Provable Solvency Report: 1fa6c926cfda1639cd6d32e56c8002b83ca4b5eefc2cf4de4ea885bd0a3277bd
Transaction ID: b18053a66d1f0577231662596059f39e0bedaaa7fd42942a51e7e1c65a19c090
View the transaction here:
https://explorer.bitcoin.com/btc/tx/b18053a66d1f0577231662596059f39e0bedaaa7fd42942a51e7e1c65a19c090
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20200120.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1579519456) and your API authentication cookie.
Example (Linux):
timestamp: 1579519456
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15795194569BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
Provable Solvency Report #69 – December2019
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 69th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,778.6544 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,796.9854. XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #69 (December 11th, 2019):
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20191211.txt
SHA-256 Hash of the Provable Solvency Report: EAA1319D7706E3F02E74635E8F0D067B53E9112FDB35E53CA28CF7457C30B10F
Transaction ID: 2129f845fb83b8ede7fbe35da5cb5fe8447f372aee4af2ec97a22dff7a615ef6
View the transaction here:
https://explorer.bitcoin.com/btc/tx/2129f845fb83b8ede7fbe35da5cb5fe8447f372aee4af2ec97a22dff7a615ef6
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20191211.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
https://explorer.bitcoin.com/btc/tx/2129f845fb83b8ede7fbe35da5cb5fe8447f372aee4af2ec97a22dff7a615ef6
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1576068671) and your API authentication cookie.
Example (Linux):
timestamp: 1576068671
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15760686719BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
Provable Solvency Report #68 – November2019
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 68th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,961.8415 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,977.5354. XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #68 (November 14th, 2019):
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20191114.txt
SHA-256 Hash of the Provable Solvency Report: 766332ADFED1E39AC1FE2A2FB4196D7221C46385635F1E95AE41E353359F3462
Transaction ID: 35c90fa16acd63500f3a6c06ced2547d2f020450fa5fa2e87e3a9bee5773835c
View the transaction here:
https://explorer.bitcoin.com/btc/tx/35c90fa16acd63500f3a6c06ced2547d2f020450fa5fa2e87e3a9bee5773835c
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/+solvency_20191114.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
https://explorer.bitcoin.com/btc/tx/35c90fa16acd63500f3a6c06ced2547d2f020450fa5fa2e87e3a9bee5773835c
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1573730240) and your API authentication cookie.
Example (Linux):
timestamp: 1573730240
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15737302409BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
Provable Solvency Report #67 – October 2019
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 67th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,908.6071 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,976.5549. XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #67 (October 24th, 2019):
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20191024.txt
SHA-256 Hash of the Provable Solvency Report: D416EBDE74A254F4E6DA2828C2DAFDDB5DC036C69AD7114ABF54F57DD1B1686D
Transaction ID: c354df2e5d6a7c8fc77b28dfbbcaf70dc6beae755bbdeb877d2785b2343208d6
View the transaction here:
https://explorer.bitcoin.com/btc/tx/c354df2e5d6a7c8fc77b28dfbbcaf70dc6beae755bbdeb877d2785b2343208d6
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20191024.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
https://explorer.bitcoin.com/btc/tx/c354df2e5d6a7c8fc77b28dfbbcaf70dc6beae755bbdeb877d2785b2343208d6
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1571910092) and your API authentication cookie.
Example (Linux):
timestamp: 1571910092
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15719100929BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
Provable Solvency Report #66 – September 2019
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 66th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,907.8566 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,944.0563 XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #66 (September 30th, 2019):
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20190930.txt
SHA-256 Hash of the Provable Solvency Report: 0F7C866DC215B965067F7E01828696216F19141CA11638AD21C7272E1879404C
Transaction ID: 737282fa27d66208b53541a78b7c9a31c8e7bd7a8d52ad87de2498421ce0ea95
View the transaction here:
https://explorer.bitcoin.com/btc/tx/737282fa27d66208b53541a78b7c9a31c8e7bd7a8d52ad87de2498421ce0ea95
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20190930.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
https://explorer.bitcoin.com/btc/tx/737282fa27d66208b53541a78b7c9a31c8e7bd7a8d52ad87de2498421ce0ea95
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1569839219) and your API authentication cookie.
Example (Linux):
timestamp: 1569839219
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15698392199BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
Provable Solvency Report #65 – August 2019
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 65th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,870.0066 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,871.9553 XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #65 (August 6th, 2019):
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20190809.txt
SHA-256 Hash of the Provable Solvency Report: AF5789B7B50A7B0D9B4CFE5FE4F2D3E5685D4CB12EA2805758416A6FE08AF21D
Transaction ID: 9f7194aa57dec706ad1ef01d64788aa3b72385a1667604c0f408705c72e46880
View the transaction here:
https://explorer.bitcoin.com/btc/tx/9f7194aa57dec706ad1ef01d64788aa3b72385a1667604c0f408705c72e46880
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20190809.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
https://explorer.bitcoin.com/btc/tx/9f7194aa57dec706ad1ef01d64788aa3b72385a1667604c0f408705c72e46880
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1565355789) and your API authentication cookie.
Example (Linux):
timestamp: 1565355789
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15653557899BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
Provable Solvency Report #64 – July 2019
Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular audits. Without proper public accountability, the industry will not be able to grow and mature. This is why we are committed to releasing a Provable Solvency Report every month. Coinfloor is proud to have the longest standing track record among bitcoin exchanges in regards to auditing.
Today we are publishing our 64th monthly Provable Solvency Report with step-by-step validation instructions for your convenience.
As of today, Coinfloor holds a total of 3,884.6845 XBT on behalf of our clients. You are invited to verify that your held bitcoins are included in this balance by following the instructions below.
What does the Provable Solvency Report include?
We started out by creating an obfuscated report of all current client balances (the Solvency Report) and then generated a SHA-256 hash of this report.
We then created a bitcoin transaction to ourselves, that includes all currently held client bitcoins, for a value of 3,886.5118 XBT. The output of the script also includes the OP_RETURN of the SHA-256 hash of the report, proving that at the time of making the solvency report, Coinfloor held all of our clients’ XBT funds. You can verify the amount and details of the transaction on the blockchain.
Key Pieces of information:
Provable Solvency Report #64 (July 18th, 2019):
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20190718.txt
SHA-256 Hash of the Provable Solvency Report: 7EB79875D7896EBBE511F20382A3F9F8F64E9BBCAEBDD34975FCF766000377F1
Transaction ID: 33d4d4d18705a0011cba593bce3cde564a41e53c48463ca0e69838e0e1208cf1
View the transaction here:
https://explorer.bitcoin.com/btc/tx/b7ca7a97eccaf4baf4c860a35bb1ffb7efd6a868167478eaee85360ac41d1fd5
Your API authentication cookie:
You will find it in My Account > Dashboard in the Coinfloor signed in view, in the API section (visible only for fully verified accounts).
Instructions for Validating Solvency Report:
1. Open the Provable Solvency Report file:
https://s3-eu-west-1.amazonaws.com/provablesolvency/solvency_20190718.txt
2. Go to
https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
Copy the entire contents of the solvency report (including any leading or trailing spaces or blank lines) into the SHA-256 generator and calculate the SHA-256 hash of the report.
3. Go to
https://explorer.bitcoin.com/btc/tx/b7ca7a97eccaf4baf4c860a35bb1ffb7efd6a868167478eaee85360ac41d1fd5
Click on the `SHOW ADVANCED` switch to view the OP_RETURN, where you will find the hash generated in the previous step matches the hash in the OP_RETURN output script of the transaction that includes all customer bitcoins.
Instructions for finding your account balance within the Solvency Report:
1. Go to
your local SHA1sum application
to calculate the SHA-1 digest of a message consisting of the timestamp shown at the top of the Solvency Report (1563442554) and your API authentication cookie.
Example (Linux):
timestamp: 1563442554
API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwEkTV3BQek=
command: echo -n ‘15634425549BTa7M0Z/Mrk6tFMJwEkTV3BQek=’ | sha1sum
(the command may differ depending on the SHA1sum application used)
2. Find the resulting hash in the solvency report. Your balance is shown on that line in satoshi units. 1 bitcoin = 100 000 000 satoshis. For your convenience, here is a link to a bitcoin unit converter:
We believe that this approach is the best way to achieve maximum accountability whilst retaining privacy for our clients. We welcome your feedback and hope that in time, other exchanges will also help safeguard client funds by providing proof of solvency reports to their users on a regular basis.
Thank you for your trust,
Coinfloor Team
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