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 0x3fe4ced8e1dffe2d997f63168092e86f1a14374f3caf8d776192e049c48a5d00. 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/c69885c4-9f58-4180-affd-a7571618e5e5.json and https://artists.proofprofile.net/proofs/artist/c69885c4-9f58-4180-affd-a7571618e5e5.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 0x054a433a8d55c50ba488276e1dd0099805c021ca0e1b6f7640a8babd087bc218. 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/QMFME2207738.
Mas Bailables al Estilo de el Supercombo los Tropicales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf861a53a012e7c23d6bc3be950b6d9604451d7a4fb4cd86b1edccb563e42a55b. 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/US2BR9702735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd24138c22cc3959f1b2ca8b7c61a65ede9fa9f0dd806461f36ade79281e6f6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US2BR9701536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa47d4bb49f7ea9645ae8ceeb240fd2a6738857c8d13426bff4cec15c35c5ed. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US2BR9702702.
Los Grandes Éxitos Del Súper Combo Los Tropicales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be528ebe24eaf63807b826c7b855aabd0468633d19d0ded731b5a1c6cb24293. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US2BR9702715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5964f7dc3b887ad307ff79ccc89b515086ac5cdc92d4e0d870abdc3abef752dc. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/US2BR9702716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ce1e4cbd707f19bf5858fa1c9119332ac7103d5811673929b64f421c5b6c8c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/US2BR9701533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d0b167a9a6a7863331d04a5c4cc0deed6c619e7da8defda34a9c2a85b5937e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US2BR9702724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de1a0a67951f4b2117b4e86ce7b31fef4efb9472b93727138978ca597209b67. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/US2BR9702725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dd685692949829d912c60cb808389d29c0fa85c63a6a524647955345f0dbcb. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/US2BR9702712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7cd8229cc58d6cef0ff9837cbd7003bd5490579bbfe9a036c8e54920288e83. 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/US2BR9702713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377ace307a937b2d9ddcab22d808210f6e2fd14ad6a06e067f9596f1a1c4b54f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US2BR9701535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22452d3cdd3f84443cd1aa17a8cefd7af4b57d4b131d386e70bb25f01365748. 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/QMDA61584857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9a6c1e93c2161595345a89485aa5516f02c7a45a1bb98a868d685074dde346. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMFMG1374584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e6ce28908d23106bcd259924eeadfc496a84e5a1e605e65ea4cf214011d6b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USJ3V1046209.