Emmet Harley Cohen (born May 25, 1990) is an American jazz pianist, composer, bandleader, and educator. Early life and education Emmet Cohen was born in Miami, Florida, United States. He began stud
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32e4f2981e0d8d1feb902ec5ec7f9c62be2c6a129bdd0f569dde1b55410d98c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/701829af-4816-4395-b519-58d3d5de1536.json and https://artists.proofprofile.net/proofs/artist/701829af-4816-4395-b519-58d3d5de1536.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Masters Legacy Series Volume One: Jimmy Cobb
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb0e82263db5c1cf74e4670c9a0f65849ec5f5add13ef58a3f4881764571b40. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACK41787004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4258072bf6cf9ab407eb0093064f163233347669305d9cf395670c3e4c26b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACK41787006.
Masters Legacy Series Volume 2: Ron Carter
Dirty in Detroit (Live) [feat. Russell Hall & Kyle Poole]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65615e1b6762cd58aa7018ba1c67cd5c134a77808e6e426537ede2efe8b93dfc. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437837cb2962ffa009e0bf20dccdecbef9259d43848956a0d691c7ddcc41fb27. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64d920fab826525e2cd5595f1e4782613a5f83072761b13f9cb8dfbc2d972e2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7527bdc5432282a4bc1f9401bf1f81a0b6f8f1a0a5c4640c711c98ab4a18d9b3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a0049c9208fde217a2acd4bab33f640e4e2f8c22627848253256211a8c4b31. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0c2acd3fb052c897df61f97318a10efb3d33857a6fc26c52df8e503bf8aa04. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818770.
Keepin' out of Mischief Now / Two Sleepy People (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02257e95414d05b8d2cb3ec626eaa7d03cf52cb64e579e7ff79d0f8ca0c0b2a1. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09273467ed33de446bc2308d261411127b163c3309e62aaaa8861bd9bb855160. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6ed7df6d53cd97730c8dda181eeb9583173e1afab46c29b7f88118457603e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818773.
Honeysuckle Rose / Handful of Keys (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284cb570400f58fd4dc6113026344a14d176d697ff565b70b90d9b06c7a6d357. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R1818774.
Masters Legacy Series, Vol. Three: Benny Golson & Albert "Tootie" Heath
It Don't Mean a Thing (If It Ain't Got That Swing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763cd24935f0d16caa2cbbf1e4fad7c0f4b8c981d6113b0b6e494df5aa8344e5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2005554.
Masters Legacy Series, Vol. 4: George Coleman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7a704b94ade59e92eb7b298e85d57c8e33a99d4bedef980bc699d963415eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2018101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf647b3bdc256a5b0e4a414ac97dba63ccf17d258d50b32a8e2f7e9b15d3c159. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2018104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bda2d1b79a8f84759b8f312fa5a87e52a92c83914953a268c7b0fbf96a9e15. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2018107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc382ac95fb46fa84432b503064331632dece28fef4b8e2f98f17dabb17e8a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2018108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6735e647bb9ffce3ecf7f2ce66f6f25471cb7e78cd1028e68f64f69140d7c17f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2018109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4ba07e170b863b596bd08c02807329201f9c198d4b88692e3ed521761e6b19. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2018110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665c12200293b67c31446474dd93a292544e601b52ec31162d3b66b91b7b49d2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2219501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f1c767607ffa2095829e6ec772f9b3ebaf3127093e5f5e1b1973674e6b1a9b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2219502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28337b1c53e47a216c415adf1fe878879a62e7069b488296dc983b0873b4ed5f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2219503.
Masters Legacy Series, Volume 5: Houston Person
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d36924947492f3a0a37fa3fc6e2a7bf3a651e569680b5ffbf94e4303372d05. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:11:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92368175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68d0df2d0dad91dd2fc3bbfc50731beda588327c74c570dfe51f616356e4bd7. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92368176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e7af25032e6682404fe4e494085155ab70e3d4deff1750841a9457bbafedc2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92368177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab50fb99328b4ea35e5ad72227e9591ac6fb13a332d45ecf0f51a19028b6dc8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92368178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051a21c5f9a9ce3a4f77602828e2ac49a74a4cfba2c7206f4ef92010b61062c5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92368179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd86732f0c2a3602632071c9a81cf0ad56ee6a5e8698541266bd1d3926cb3ef. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92368180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9a818856dbd81bec9c72309ffc8dc66baad8870033f0d3b6b60b1a60a2693. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2421103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b5bfe27e3636ec7c40cdc1b17515147eaf5509726ae63887b5e7bb0ef1bfc3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2421104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff113d5122c7b95d54eb2c841680b2f4058625db37bfeb8643a5468f71e304b. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2421105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fb08f7c79401b49ec219130f3d4a263290abad2593b6625e967b51172819dc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2421106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffe9fc507ce0e0ce3d35728cbc16b5bae6e7ac0acff5e1014dac57347d3f4a6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2421107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1c08b456b01aae60aedcfe79557f9fe05426b6132d1e6998b16d57f1fdd92b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMAR2421108.