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 block chain

The invention of the block chain 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 block chain.

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
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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May 25, 2018 Provable Solvency Report #50 – May 2018 5,431.2487 XBT 25ec8d127c930bd29b4521a8d64a74a5fd4415b0c97188e173ff88719c62ec42
7574b8e28bba481f00c839f0064f5b32a1aba19a805aa6a00e00ff340d0853a4
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Apr 23, 2018 Provable Solvency Report #49 – April 2018 5,246.4536 XBT 9343469d75a98a4ffefcbc48edc8bd84cf8f025a2ffa0f305548f87947c8dddc
c6c43ff810d3512ec5f7b6bd1f53cc5a3bdc9f28110b5f5c6ced07bb87a0e962
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Mar 29, 2018 Provable Solvency Report #48 – March 2018 5,445.3368 XBT a2bf71f04d0ee1efd05e196230b2842477711779076f67b4c330f49dc823289e
fb6795fb5766d4b500c696c11bbfc63f42bc438e44026e18624618b6b9faf610
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Feb 28, 2018 Provable Solvency Report #47 – February 2018 5,249.9435 XBT 9f3af0656361b95a63b48048aad212dac8f8c5055353beaaabbde24d979cdcf2
7a99984e31485fabc7f6224dc9cc5eaf573ef04bcaf571017caff2e1eee750a1
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Jan 31, 2018 Provable Solvency Report #46 – January 2018 5,338.5714 XBT b32cc17288e563e24b35a52a44da212aeef853d1b3b1df0aa92dcaf683ef35c3
cd6b491a8850ada9ee0a8271327f1f313e1cab5cba36bc9a4a73484a50364419
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Dec 22, 2017 Provable Solvency Report #45 – December 2017 5,558.6370 XBT a90073e1572eb77abf4e023b819416d0579ed8d6bd85b9a77e7fb377aa8bc06b
f26cec99157799d2c5a4a4d104f56b033c5e4f46c7f735d2a8917e19381458be
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Nov 30, 2017 Provable Solvency Report #44 – November 2017 5,907.1208 XBT d894881b97887730d4d1d29b508a51167cc36d2759cc7a8094d3c6efe30983fa
d537d970bc04fcde70d503f610872862384f50e66e8d217e16b7a16e78fff6a3
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Oct 25, 2017 Provable Solvency Report #43 – October 2017 5,026.6256 XBT a35c4581ae835ad28066a2e2be6c2b1b8439439713f7d4929f83072765de9175
5ac9bc29148a7c82d10452921e780f3f4e3c9f2128f507df9b4d101b4a7c86bb
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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
Transaction ID
7574b8e28bba481f00c839f0064f5b32a1aba19a805aa6a00e00ff340d0853a4
Name of the report Provable Solvency Report #50 – May 2018
Amount 5,431.2487 XBT
SHA-256 Hash of the report 25ec8d127c930bd29b4521a8d64a74a5fd4415b0c97188e173ff88719c62ec42
Date (UTC+05:30) May 25, 2018
Transaction ID
c6c43ff810d3512ec5f7b6bd1f53cc5a3bdc9f28110b5f5c6ced07bb87a0e962
Name of the report Provable Solvency Report #49 – April 2018
Amount 5,246.4536 XBT
SHA-256 Hash of the report 9343469d75a98a4ffefcbc48edc8bd84cf8f025a2ffa0f305548f87947c8dddc
Date (UTC+05:30) Apr 23, 2018
Transaction ID
fb6795fb5766d4b500c696c11bbfc63f42bc438e44026e18624618b6b9faf610
Name of the report Provable Solvency Report #48 – March 2018
Amount 5,445.3368 XBT
SHA-256 Hash of the report a2bf71f04d0ee1efd05e196230b2842477711779076f67b4c330f49dc823289e
Date (UTC+05:30) Mar 29, 2018
Transaction ID
7a99984e31485fabc7f6224dc9cc5eaf573ef04bcaf571017caff2e1eee750a1
Name of the report Provable Solvency Report #47 – February 2018
Amount 5,249.9435 XBT
SHA-256 Hash of the report 9f3af0656361b95a63b48048aad212dac8f8c5055353beaaabbde24d979cdcf2
Date (UTC+05:30) Feb 28, 2018
Transaction ID
cd6b491a8850ada9ee0a8271327f1f313e1cab5cba36bc9a4a73484a50364419
Name of the report Provable Solvency Report #46 – January 2018
Amount 5,338.5714 XBT
SHA-256 Hash of the report b32cc17288e563e24b35a52a44da212aeef853d1b3b1df0aa92dcaf683ef35c3
Date (UTC+05:30) Jan 31, 2018
Transaction ID
f26cec99157799d2c5a4a4d104f56b033c5e4f46c7f735d2a8917e19381458be
Name of the report Provable Solvency Report #45 – December 2017
Amount 5,558.6370 XBT
SHA-256 Hash of the report a90073e1572eb77abf4e023b819416d0579ed8d6bd85b9a77e7fb377aa8bc06b
Date (UTC+05:30) Dec 22, 2017
Transaction ID
d537d970bc04fcde70d503f610872862384f50e66e8d217e16b7a16e78fff6a3
Name of the report Provable Solvency Report #44 – November 2017
Amount 5,907.1208 XBT
SHA-256 Hash of the report d894881b97887730d4d1d29b508a51167cc36d2759cc7a8094d3c6efe30983fa
Date (UTC+05:30) Nov 30, 2017
Transaction ID
5ac9bc29148a7c82d10452921e780f3f4e3c9f2128f507df9b4d101b4a7c86bb
Name of the report Provable Solvency Report #43 – October 2017
Amount 5,026.6256 XBT
SHA-256 Hash of the report a35c4581ae835ad28066a2e2be6c2b1b8439439713f7d4929f83072765de9175
Date (UTC+05:30) Oct 25, 2017

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 block chain.

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.

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.