The 4th largest international forum on blockchain and cryptocurrencies Blockchain Life 2019 takes place in Moscow on October 16th—17th. Every year forum gathers more...

Video games have become a favourite tool for AI researchers to test the abilities of their systems. In this episode, Hannah sits down...

The story of automation has sometimes gotten caught up in familiar tropes: Robots are coming to take away everybody’s jobs.Perhaps a more imaginative...

Contents Introduction Core Best Practices Tracking Industry Trends Best Practices and Your Career Conclusion 1. Introduction Software is a fast-paced industry. The lifespan of some skills...

The Weave offers an early investment opportunity in a patent-pending enterprise blockchain platform with vast commercial appeal – scalable to multiple growth industries...

This is the new BMW 4-series. Initially revealed in two-door coupe form, it will soon proliferate into a cabriolet, four-door Gran Coupe,...

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:

https://www.satoshi.24ex.com

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

A throwback to Google I/O 2019...One of the most exciting changes that Google announced this year at Google I/O 2019 is CameraX....

The project’s top priority is fraud protection and bookmaker’s activity transparency (users can always verify the platform’s account balance). You can bet that...

Reading Time: 3 minutesThe 5 Most Common Pitfalls in Your Security Stack That Put You at Risk for a Breach It can take 6...

Reading Time: 3 minutesThe 5 Most Common Pitfalls in Your Security Stack That Put You at Risk for a BreachIt can take...

Digital transformation puts technology at the heart of business operations, products, and services. Thursday, August 1, 2019 By: Hadi Hosn It...