{"copyright_id":"0x29ff7c01d4cc6bc4941078d91cfe791a67ba30da7bb39133dc7cb1facb4f3df3","name":"Agrupación Tabaiba","registered_at":"2026-06-20T06:45:51Z","symbol":"NIM1544501","token_address":"0xcf5bd6783ad21e928bc90c1aa0eb02d6bbe3b9e0","type":"artist","uuid":"a47e97e8-4a16-424b-a434-ffff1f3bdbc6"}
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 0x29ff7c01d4cc6bc4941078d91cfe791a67ba30da7bb39133dc7cb1facb4f3df3. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a47e97e8-4a16-424b-a434-ffff1f3bdbc6.json and https://artists.proofprofile.net/proofs/artist/a47e97e8-4a16-424b-a434-ffff1f3bdbc6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Polka De Gran Canaria / Somos Costeros / Espérame En Agaete / Zaranda Campesina / Sorondongo Majorero
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 0xf486856f5d961cd137b01d6527e683beff29a3566f98297b3554e0a0efd050bb. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/ESAAI0220739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f7897ac6ecdfc567c6185f5097869757c4610593cab2154d0336256375b276. 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/ESAAI0220730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce0cb33b6d0acc7f20b644e3066d8de6de2395b1bf1f6cf429c621588afa8da. 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/ESAAI0220729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237684735b589d5e02348ff1c88843da96f93f401483c3932f5eb835f26b4626. 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/ESAAI0220734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e738d623acfcc24901ea8fc2bfb05ce7d39c2ebd86d50cd2e18bfc7ed561f72. 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/ESAAI0220743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac41f2f7cc81e663dd22d7281818ea1ca43665975c76f8054256a0da7bc2bea7. 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/ESAAI0220741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe7fd1a3cdbc8ca21e2a2764bf63c1e7a9452e1f788a224560b23fcccbd7975. 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/ESAAI0220731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa828f631d0ea65916963400324814b7866c0475a56fbe4980252d95b12fc4829. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ESAAI0220733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370d2b29e5b061d4235110eda0784620c4f42c96203c4fb7a8dce7261bb9cd8c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ESAAI0220742.