{"copyright_id":"0xbcb0d8a3edbd4dab56b4f3ea2f3ed762929dc6fe756a82033f5987aebafe78a1","name":"Banda el Diamante de Zirahuen","registered_at":"2026-06-14T11:19:06Z","symbol":"NIM0436471","token_address":"0x5d0fca7e88dbece6a5afaac3b8b8e2d3d73c2b20","type":"artist","uuid":"4120a39a-ed8e-4ac3-9b1f-f09ae168fb06"}
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 0xbcb0d8a3edbd4dab56b4f3ea2f3ed762929dc6fe756a82033f5987aebafe78a1. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4120a39a-ed8e-4ac3-9b1f-f09ae168fb06.json and https://artists.proofprofile.net/proofs/artist/4120a39a-ed8e-4ac3-9b1f-f09ae168fb06.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 0x619cef97e52b1a4261f54534fc0cfce2bf426e629a4531d8d15ca6c58781696e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:12Z), 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/USDY41792214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cad82f13b5d2e5a6aa0d1009eb6d7a4f50ac0a89fa1e0fa853e25a173526c96. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDY41792215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8162a5a576716ecb9e459e92e92a71633af8daf91ef4f25562454e40ca2857d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USDY41792218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50edf4adfcbb9c16533522b6847f218c8ec9236046c09fd1946a8e4a18979053. 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/USDY41792220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc66a0568894aa502bb2e5bceb3d73a3382eda6e1bc2067b299dd9e92bb3b0ef. 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/USDY41792222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abaf900de9c2ab3a8c3970b376a05b00a1f37a6bb1cdd25251f0d4cc2b7f011. 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/USDY41792224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2a6374fcdfe5752b773a8c7d020d6b09ca870d608ed1ab25750d73c00b6c86. 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/USDY41792226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f934911c7fcb0556052c0b9d0144b5bb5a1ebd24c08df93046bc897eab5ba. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USDY41792229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967e776a237dd4593c1e26b6f8992fcec01cfcd2a8fc59a793601c8655bd49fb. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USDY41792238.