Cyrus Chestnut (born January 17, 1963) is an American jazz pianist, composer and producer. In 2006, Josh Tyrangiel, music critic for Time, wrote: "What makes Chestnut the best jazz pianist of his gene
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb409aff8c03d9dc502a9f2942ece079ce0ca80c7793b64837382faa15abc32ba. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d0e99fa-d9cb-4e70-b8f2-95d8e389ce57.json and https://artists.proofprofile.net/proofs/artist/1d0e99fa-d9cb-4e70-b8f2-95d8e389ce57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69efcb8ee8cdde03d76c8c1faacfb5515fe372433d00d3ae12712ffe10b8f428. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHNR2233909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996304b6240d75f25a4f813f59a8643f11b107a07910f1f84f0d6d21471d3d10. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHNR1831701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95906a43b4aa56c94650a00822a7936d793d924d85e4c107747d0ac1e8ffab9d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USHNR1831702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4dc8ea9d00bedc8d00c289db6cf2ca9452b4b0a313525dc01dca1b401973cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHNR1831703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86479500a0986b1fd4b725bc1e7154fd8ff00ac2a2a006f04e1df78117aee3fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USHNR1831708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19623dfdc6d897ea30e88ab9a42f2464a74986fb83bac315421f609fdf6718c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHNR1831710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6ce6213b73fed6ca706236dd649bf6760fa1b0b33aaf4dd524445975564a96. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHNR1831711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b174222d32205f139c92289e1c6dbeea7101bfe4364e2a9089680533149b85f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHNR1831712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c9ea5db74809ee139f718a7275544e728d3eefba78e435b2394544c6f9087e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHNR1730410.
Midnight Melodies (feat. Curtis Lundy & Victor Lewis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7a7ff140e063bea955c47b37a3eb4832c774a71cf89807058785c0de0cca10. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMCAL1400023.
Plenty Swing, Plenty Soul (Recorded Live at Dizzy's Club Coca-Cola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48431a46e5d455868817c4b7dff5983ab3d4b3407b6acbf107988ab98604576c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US89R0913886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb8a958d8fb12a05b4029412c05eba7976293b8da21c639304e7ae1bca2df75. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US89R0913887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca98603e11ffff94ca7f479aff45bafe17021ce747db54b8ba421eb82d4cc1ee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US89R0913888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d047ac107cc4b348b78f2d46f56262c1aa813e4cacc19e1bb261febcc419ea. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US89R0913889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ecbb1c81023ccdef12fb3f678d3d2590f847e9a98024e95040de42653f2162. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US89R0913890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f44ec577c33bc91cc9b519adb97739593cf731830f272b6dad7c03eb9e01a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US89R0913891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8569be66e99ac5a8d17fe1eb8c3ec26636c1d10f8c78f4b866de404e5c17c8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US89R0913894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1ca948fa59110c57b3610d9ce7756cd48f050e804bbf49aa96ae73b14f2010. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US89R0913897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb122986f886c381e572198fd82326b01e0445161ee593bba2c9146abf2a1f4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US89R0913898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5655e17679f4176848c77485ebe2145e73f2b3f2c0de1d1b109c4338bba5fb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US89R0913899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606ff3183a4e61b5d06128c3b214ec87dca04be15dd7c5f0b0961d3fdc670207. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USWB10300813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb66f667b5167c3f4f00d9684f57ade3b5c80fee6fb40c145cea8aa8932cd6d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWB10300816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc879fee1d4afa12d40ba5b5ea86372822b796a82bb07f0b80477be9224bc4a23. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:18:46Z), 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/USWB10300817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c029fbada5e391bd0c979c112245a343bd584c70783cfe798dc50d6a8c18abb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWB10300819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb4470479967e9925a29937d3ab62d683a245e92fb90db8eb8da110b78c9bff. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:35:54Z), 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/USWB10300824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cde692bf48181e3bcfcd330d68a09696a2ecc2dd34fe9925b352f23e473265. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USWB10300825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c3cc8f609bbc16e09c0ac2b49d2e0a5e2d14c20e1f51b1df0aa0c8fd18a739. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:59:20Z), 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/USAT20002516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94584bcdb76cb533b03a4a17e3a43489561ffd363dbd946cefe4c8a8afe9ac5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT29800772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865a7e0bccc7faa8559e95239ecf28a9b30f367c57ed88e72549f8afbc1fdf40. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USAT29800774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c659ca517e1ce340c9ab19d5cf745dd0f8651d7ff97e80972b86fa44cd18d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USAT29800776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db7209a9f49dae6d5a67812948ec269c36407dbb62ec1e07d778bf9da36979f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT29800779.
Blessed Quietness: A Collection Of Hymns, Spirituals And Carols
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1f95a54eddf777e1b42ed1070caf3a23e48168ffc1a5b6c986340f6afb0fbb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USAT29600171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6c44517083cbb103fc82bcc38de2366b8325cecfa2ebf54162152db510be57. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USAT29600175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2caf689ed41951ed50e2d45dfa558845401b984617c77959df4f791753321b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT20101719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7eb934b848fc603a056107aaacd8ace4b6a6980750818be27252d581b4ca39. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USAT20101722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719cbadaf0c5ec5a3ebaba57bd6f5ac6cdbf7361cd6631973e5f5d4f94ab9d15. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:06:13Z), 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/USAJ10100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f7278d264425461dfc13259f0a4d24b3d86e4da44c4ed1035bbfec77e2565e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USAJ10100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69efcb8ee8cdde03d76c8c1faacfb5515fe372433d00d3ae12712ffe10b8f428. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHNR2233909.