What are Bitcoin Audits?

Bitcoin audits help clients independently verify whether an exchange is solvent or whether they have been hacked or have misused their clients’ crypto.

Coinfloor is a custodian of client bitcoins and we believe that we must set the industry standard for transparency and regular attestations. Without proper public accountability, the industry will not be able to grow and mature. This is why we have always committed to releasing a Bitcoin audit (also known as “Provable Solvency” or “Proof of Custody”) Report every month. Coinfloor is proud to have the longest track record in the world for creating these reports – in fact, we have produced more solvency reports than all other major cryptocurrency exchanges combined.

You can review all our solvency reports below

For more information about why Bitcoin audits and Proof of Custody is so important, see the excellent article on how to effectively scale the Bitcoin industry by Nic Carter, the respected crypto commentator.

Make Exchanges Prove their Reserves

Powered by the Bitcoin Blockchain

The invention of the Bitcoin blockchain as a global decentralised ledger enables markets to produce new standards of accountability and the safeguarding of client funds. In a self-regulated environment such as Bitcoin, firms must compete for customers’ trust by providing greater transparency.

Maximum Accountability since 2014

We believe that this approach is the best way to achieve maximum accountability while retaining privacy for our clients. We welcome feedback from the community and hope that other exchanges are also able to safeguard client funds and will provide proof of solvency as well.

Report Published Every Month

Coinfloor is dedicated to accountability and has committed to publish a Provable Solvency Report every month, showing the total amount of client funds Coinfloor has on deposit and proving ownership of those funds on the blockchain.

All published Provable Solvency Reports

Need help? Email us at [email protected]

Date (UTC+05:30) name of the report Amount SHA-256 Hash of the report Transaction ID
Mar 19, 2019 Provable Solvency Report #60 – March 2019 4,532.9639 XBT 76317D6B10758EB9D3ED459482323FD5C7F1AAD5841C6C0C98C26CF4036FB143
64289aa946d94298a796e4c0769cc8b9b5bda180c6060d7efa6e867f86fcaad1
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Feb 27, 2019 Provable Solvency Report #59 – February 2019 4,317.9491 XBT 95D273CBBA0FCCCC53BDE91AF6891A95C4BC3793A4DDCBE93CD352CA036A95D4
2b51089d23f9d9d8f062213310814e4c8d6bb85f8647492aae2b19f6c2abe0c7
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Jan 28, 2019 Provable Solvency Report #58 – January 2019 4,309.4410 XBT 7953449A3037AE8D9A61276C844F3B54D53DBBB6C96CD2AD974420894B7BDAF3
6e2d4e7d2cd86c43e59ab43a057a740eb4498d5560b6b53b1fbd7740b27e666e
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Dec 27, 2018 Provable Solvency Report #57 – December 2018 4,448.8289 XBT 2BF69C4FA152B8851D18FD4E01FEF1DED41F39EC51FAE2A98D84301DF9B82E0A
4a4be973c0bc6c694b43b7ffcb49a17b25efeebbdc3b5031c05cecb6abaf1c92
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Nov 28, 2018 Provable Solvency Report #56 – November 2018 4,446.1628 XBT 300820EF379C78C36021F4D8618D747E06E7E1FA00BEC44F77FFFA65C94386E9
8d6c62b1d495d999b0d0332856ff051439a4cf6aafefbe3da89d11aa081eb61a
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Oct 23, 2018 Provable Solvency Report #55 – October 2018 4,460.1497 XBT 7BC72810C8718D12AF1EB53014EBC07612606F0DD4804E435CB0FA9846646C60
388349c4f871ac07653e61d3592244eacc509d6db7282416f3379c5d2af3e806
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Sep 17, 2018 UK Provable Solvency report #54 4,588.8802 XBT A1B378359A88DB417F6EFE0C6C7CCE8CA1E223005AF243A9B78A3CF0EEF44448
4d873b5c1f240a27ad724c26c411efb46320f4592e341f0270d1153ef3c82c71
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Aug 21, 2018 Provable Solvency Report #53 – August 2018 4,785.5339 XBT 9C0A664E610C1267C36F10521C48D590AD95C1F6C59A172104CA9EEF06F62739
76212aee6b69e9c06e386712c66415893f1b82893c56d9949ee1a1bf0e37921b
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Jul 17, 2018 Provable Solvency Report #52 – July 2018 5,162.7939 XBT 6C10D76FB401D3C91D75894ABF216D55B9F834031E2AFE75FA1582778BBF6B75
bc1a27916242f69d59ae1296d28e3407c2e2038820ebc1de83bf805a16db4bac
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Jun 27, 2018 Provable Solvency Report #51 – June 2018 5,460.3197 XBT ba595a76394992150b7ba47e821e852596fa0f4d1c78c5f517c993bb62c13f6e
19b2f3a11d6b2299bfcd85f392d6a25f051c5487b9731c079ab94161117bf9cb
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Transaction ID
64289aa946d94298a796e4c0769cc8b9b5bda180c6060d7efa6e867f86fcaad1
Name of the report Provable Solvency Report #60 – March 2019
Amount 4,532.9639 XBT
SHA-256 Hash of the report 76317D6B10758EB9D3ED459482323FD5C7F1AAD5841C6C0C98C26CF4036FB143
Date (UTC+05:30) Mar 19, 2019
Transaction ID
2b51089d23f9d9d8f062213310814e4c8d6bb85f8647492aae2b19f6c2abe0c7
Name of the report Provable Solvency Report #59 – February 2019
Amount 4,317.9491 XBT
SHA-256 Hash of the report 95D273CBBA0FCCCC53BDE91AF6891A95C4BC3793A4DDCBE93CD352CA036A95D4
Date (UTC+05:30) Feb 27, 2019
Transaction ID
6e2d4e7d2cd86c43e59ab43a057a740eb4498d5560b6b53b1fbd7740b27e666e
Name of the report Provable Solvency Report #58 – January 2019
Amount 4,309.4410 XBT
SHA-256 Hash of the report 7953449A3037AE8D9A61276C844F3B54D53DBBB6C96CD2AD974420894B7BDAF3
Date (UTC+05:30) Jan 28, 2019
Transaction ID
4a4be973c0bc6c694b43b7ffcb49a17b25efeebbdc3b5031c05cecb6abaf1c92
Name of the report Provable Solvency Report #57 – December 2018
Amount 4,448.8289 XBT
SHA-256 Hash of the report 2BF69C4FA152B8851D18FD4E01FEF1DED41F39EC51FAE2A98D84301DF9B82E0A
Date (UTC+05:30) Dec 27, 2018
Transaction ID
8d6c62b1d495d999b0d0332856ff051439a4cf6aafefbe3da89d11aa081eb61a
Name of the report Provable Solvency Report #56 – November 2018
Amount 4,446.1628 XBT
SHA-256 Hash of the report 300820EF379C78C36021F4D8618D747E06E7E1FA00BEC44F77FFFA65C94386E9
Date (UTC+05:30) Nov 28, 2018
Transaction ID
388349c4f871ac07653e61d3592244eacc509d6db7282416f3379c5d2af3e806
Name of the report Provable Solvency Report #55 – October 2018
Amount 4,460.1497 XBT
SHA-256 Hash of the report 7BC72810C8718D12AF1EB53014EBC07612606F0DD4804E435CB0FA9846646C60
Date (UTC+05:30) Oct 23, 2018
Transaction ID
4d873b5c1f240a27ad724c26c411efb46320f4592e341f0270d1153ef3c82c71
Name of the report UK Provable Solvency report #54
Amount 4,588.8802 XBT
SHA-256 Hash of the report A1B378359A88DB417F6EFE0C6C7CCE8CA1E223005AF243A9B78A3CF0EEF44448
Date (UTC+05:30) Sep 17, 2018
Transaction ID
76212aee6b69e9c06e386712c66415893f1b82893c56d9949ee1a1bf0e37921b
Name of the report Provable Solvency Report #53 – August 2018
Amount 4,785.5339 XBT
SHA-256 Hash of the report 9C0A664E610C1267C36F10521C48D590AD95C1F6C59A172104CA9EEF06F62739
Date (UTC+05:30) Aug 21, 2018
Transaction ID
bc1a27916242f69d59ae1296d28e3407c2e2038820ebc1de83bf805a16db4bac
Name of the report Provable Solvency Report #52 – July 2018
Amount 5,162.7939 XBT
SHA-256 Hash of the report 6C10D76FB401D3C91D75894ABF216D55B9F834031E2AFE75FA1582778BBF6B75
Date (UTC+05:30) Jul 17, 2018
Transaction ID
19b2f3a11d6b2299bfcd85f392d6a25f051c5487b9731c079ab94161117bf9cb
Name of the report Provable Solvency Report #51 – June 2018
Amount 5,460.3197 XBT
SHA-256 Hash of the report ba595a76394992150b7ba47e821e852596fa0f4d1c78c5f517c993bb62c13f6e
Date (UTC+05:30) Jun 27, 2018

Instructions For Validating A Solvency Report:

  1. Open the Provable Solvency Report file by clicking on the name of the report.
  2. Go to https://passwordsgenerator.net/sha256-hash-generator/ or to your SHA256sum calculating application.
  3. 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. You can confirm the hash generated matches with the SHA-256 hash of the report field.

  4. Go to: The Bitcoin block explorer https://live.blockcypher.com/btc/ and search for the Transaction ID of the report.
  5. You will find the hash generated in the previous step matches the hash in the “Hex” reference (at the top of the page below a heading saying “Data Embedded in Transaction with Unknown Protocol”) of the transaction published on the Bitcoin blockchain.

Instructions For Finding Your Account Balance Within A Solvency Report

The provable solvency report consists of balances attached to SHA-1 hashes for each customer account.

  1. You can generate your SHA-1 hash by using your local SHA1sum application or online calculators such as https://xorbin.com/tools/sha1-hash-calculator.
  2. You will need the timestamp from the Solvency Report (10 digit number on the first row of the report) followed directly by the API authentication cookie from your Coinfloor account.

    Example :

    Timestamp: 1579519XXX

    API authentication cookie (API Key): 9BTa7M0Z/Mrk6tFMJwXXXXXXXXXX

    Input to calculate you SHA1 Hash is: 1579519XXX9BTa7M0Z/Mrk6tFMJwXXXXXXXXXX

  3. 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: http://www.satoshi.24ex.com.
Coinfloor CFUK logo

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.