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 0x4084ee411500dbda65f7a82716f83aa190b5d08c1c4d8ba352c6642b384a6a1a. 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/74037778-0fd7-43f5-bd03-1809817a230b.json and https://artists.proofprofile.net/proofs/artist/74037778-0fd7-43f5-bd03-1809817a230b.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 0xced415416eb3ff7089d388209c312d29b6e2afeb74352e9cd0360756401e61b6. 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/USAR17800193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac06a59ed29177b8123d6e49c56c05945c4aa7e7bd45677b1272fbcb1cab7418. 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/USAR17500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3a5f3d91d27806cd964bd68b031a7c7069fc5aec85dfac9426b7d304ebbbaf. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USAR17500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6953006fe3800bceaa9b80298d5be62e76ad9665157612bde4bb533506b8bd58. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAR17500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c1314005514e00c54617ac808dae306a16259f732cde16ede459ad5e7eef8. 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/USAR17500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807f0b27aaa3d5a0a683d3e15c6b6f1ba2d7218c3fa234a13eb19c02c7b522a5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USAR17500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87029a235765364be6953191d0a129aa20a3847a7d7c55b09e751a9db39f3b8a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USAR17500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f8ec211a75f7da50e99460926d8fccc08ae0476fe37a1384fa5337c227ae9c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USAR10201667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2690f6c9b2efdf167c84986166c52b6fbcbdfb9730735ddcb85ed57829757eed. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USAR10201668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f69badfc032b2d177ae1593f1198e0eea28e4753c73a560ab78470bcbaf4c71. 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/USAR10201613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099ab09c15e66503149d0c1a2d4c53839e1b9cf6407d4afc46ff136c4e645303. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USAR10201670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a55e51086ea5dfdd386e86f694bd84aef96cfb68e05e65be1b258eb1bb345e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USAR10201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad7e8bc5c0c3e6d9a6e4f5c2295389d0f8c8292c9c195159f4e8e1e64997390. 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/USAR10300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d84438ffe8e5006c5ee725eeb82712089f2504cb51b1bc8ad83bfe49aa4af88. 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/USAR10300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08aab801159726e750beb8a464b99cfa8661cece1f9be291ab0bc2970461212. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USAR17800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf564770f8f9a007b0d20f8e5c07cd0eff6d21707f36e9f78e530bf3aa3b09962. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USAR17800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08aab801159726e750beb8a464b99cfa8661cece1f9be291ab0bc2970461212. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USAR17800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf564770f8f9a007b0d20f8e5c07cd0eff6d21707f36e9f78e530bf3aa3b09962. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USAR17800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ccfb6e4af2dbdd47437f0e14d24defe1484bbb659c968c906f04e66785410d. 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/USAR17800194.
You Ga (Ta Give It) (feat. Carl Carlwell & D.J. Rogers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f2d05488bc7f724bd9b9a39ac6ec0eea222b067bab9402f88082982a170855. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USAR18000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e63a73f48df858af0f43eb72ee0bc800ba4ed493c7ddfcb7c970ae7a614935. 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/USAR18000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4915f39c6d11b17cb5dbd79dbf5920c87df6be1e96f8792ec6ebd968773b29ea. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USAR18000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb51ea7a38e8e3978dc85968d35bf0cdded079d17994ce4dbd3faf46013f1d3. 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/USGR19200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb13b377e601e7dfe0fdb55ec956deca1090b46ab9cedeaf63a09f75b787e04. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USGR19900809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5023084293b2043f73ddff45b155d4ea3d39523dbb9c97e94275e4c603d63b. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USGR19200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b15c4d7f12c45af8657136414dc52bebe633a71e8066b7253f330a2f8b61b08. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USGR19900296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6465dab02026d07c4d42c2fd65cc05a4d8b4c80161e0d8d22b29aa94268d5. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USGR19900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf950fd31f0a2c68405b8961eec8f079e55955020814d5cca0a8e8801f9b2b940. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USGR19400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64748f07352a269862363db5a957532bc88483cfa22e2c50f0d2ce6e38e6fade. 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/USGR19200045.
Sneakin' Up Behind You: The Very Best Of The Brecker Brothers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd16a5bea20c7583e47347f11d9d77421b0a66b93f14644e23671a085862c5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USAR10201631.
The Brecker Brothers - LIVE (feat. Mike Stern, George Whitty, James Genus, Dennis Chambers) [Live]
The Bottom Line Archive Series: (Live 1976)
The Broadcast Collection 1978-1995 (Live 1978-1995)
Seventh Avenue South (Live New York NPR 1981 Broadcast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6953006fe3800bceaa9b80298d5be62e76ad9665157612bde4bb533506b8bd58. 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/USAR17500181.
GRP 30: The Digital Master Company 30th Anniversary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c507814fe282aa8acb1b650d62e0c72a0a83f10041add04541ec700538b60c6. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USGR19200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64748f07352a269862363db5a957532bc88483cfa22e2c50f0d2ce6e38e6fade. 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/USGR19200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fac864adac0e4bc349d015f3367a7a7505b7b0fc9c347e500a9aff46a0e420. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USNPD0714149.