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 0x9dc6e0d10448b821fda234d02586b37bdb9fc450adabbb9c2632be1f6348e522. 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/7aa9128d-fff7-4f23-a0ab-b702418450f2.json and https://artists.proofprofile.net/proofs/artist/7aa9128d-fff7-4f23-a0ab-b702418450f2.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 0xb6602a2e4945cf958fe9a6ea390131763014f4b23e82313277ace214b08f0bd7. 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/QMFME2257648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b74765c7a5e8182ea7ae444e4cefc9354652933f583a5347235e61978a0bf6b. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/FR2X41787242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9afa38b09284c504a2df2cc2c47a75f4baa4c28a25b8976d92ff93948287538. 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/FR2X41787253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa62d11ddb43110c9e36488d7be6dcdd36f8842cf4ba3105f460745823ec4912. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FR2X41787502.
Homenaje a Julio Jaramillo Desde New York
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe8435ca9c81a87d18db9cf8c5a138c0c665c1500f8a57c274df59a0a70ad50. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X41787240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b74765c7a5e8182ea7ae444e4cefc9354652933f583a5347235e61978a0bf6b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR2X41787242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f71a0049c96ff39a18cb77bdecd00134d432b5dbe1eb0cf8d04cc9b7c87e23. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR2X41787245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e1bed712ec71a995c9d18d9533c9556ba3058e4525815ad3cc44ef1a390883. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR2X41787246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938a06fb85082467a2f87e9ce32d7805f48768414ed31aea8bc65afca4f2a711. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/FR2X41787249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e78633241d12863477980ff03e0e463c199de1d9a5085f6a35b018211263595. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR2X41787251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9afa38b09284c504a2df2cc2c47a75f4baa4c28a25b8976d92ff93948287538. 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/FR2X41787253.
Los Dávalos (Sus Mejores Marineras, Pampeñas, Huaynos y Yaravies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9f9c4ecd6944649cf37ad473126b902ae000a2753a87477125da16ee66c08d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR2X41780041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a7485a53daf70e54b5eb9751da4e56ae26173e8fc8b59a98d8567be0915540. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR2X41780042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6f01731664c467b23dcbcc1efaa4fc18e859c6e18191a195c21b42955f9aa. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR2X41780043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34132bb81813f4975b196fb27d310f9248914fe1b92147972611816be9d24fad. 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/FR2X41780045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666a0ff86c645c34a04a0f87726002b0190f200364ac6505f32d03c1ca32d073. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/FR2X41780046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c4edc39950c6a90f2091d1734bfedb411def96f602c9748d434a2d0f693b6e. 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/FR2X41780047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a3ab61f0905d8d2804d185fd59237a3d9b1123a6b7ef5bd6ed85db6454d294. 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/FR2X41780048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82931915d139c02ca7f73ca9c7dd281ba1495ca488ad9f3cfff6b07881f7ad35. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR2X41780049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6cb02e5392f750c4ef4b753003755204d7438fde9ca59b91b5caab27d103e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR2X41780050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1edde0b19108fbde4d787961a29e4a299bf264b35f83b29c86ffe7ebdf7b00. 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/FR2X41780051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862f901a2274ba70ce6be6f9917883706fb0442d3796e9884fbfe66f2f4b5526. 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/FR2X41780052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db44e6e01cf8c4aec8076452285e69d41cd384523fafbeda46c8a1446aa09a9. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/FR2X41780053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20671884678560416e6f1bad6bc723c504c15129f6917402c0162c95aea6006b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FR2X41780054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62973fe18c1f2665055d30c2f04cd8ce0be606f4b95b1be0616d95698a1990. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR2X41780055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9f5a22faa2eb495e9db73840eff99fda652a2a3b1c2b1b5ecedff9b1444328. 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/FR2X41787494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1651650d37da8e90a4b8863ceec3b940f7360ee6b622df6cabc241243442bb52. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR2X41787498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a568fb7f496462d1763b2f1d8eb9c6096e1f26a1a79b9fe7661b069bfe3c5b. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/FR2X41787500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7322d485003bd9e5cdea615fd0c58cf86e43ae5aa755332b391c1b1d1377402c. 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/FR2X41787505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734a3e88637d67b142a38fe236cc32730e1103cf02cac52d4f52cc0a495559d7. 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/CA5KR1549569.