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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60e7cdc34946381bb17773d6b2782456abba851d7cfff118f8b21afbc969eeb. 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/b279bbca-19fe-4e22-82ba-ef0d393c192d.json and https://artists.proofprofile.net/proofs/artist/b279bbca-19fe-4e22-82ba-ef0d393c192d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7164223ddc784a48421144014bcf96285cb39b2b3276db1460a2ecea77b23a83. 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/ITDF62177164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8263f4fa8bf483a651c5cf216fcaba4794dbcdcfab7993c54aa1118a7809ea06. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:33:55Z), 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/ITDF62277029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6459f15549ab89fb6e729a2ff790f3830ae5e0a431a0295c5ac61f6690619152. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:36Z), 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/ITDF62277033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1058f6682efc87c8f52f3d1c34dae22857985f8cf1e43b1ca7653986fd375e55. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ITUD52200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea6aff7ff8ae02edf8fc9dc403be13b2541d972eacc76ef0b6383d1ca6d4007. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/ITUD52300015.
La Famiglia (feat. 8blevrai, Kassimi, Yunes LaGrintaa, Sisco, Néza & Nabi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529e94bc0aca18f45316637ece1c5992b63ed907d185d8bf43fe6045cce33b77. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITDJ72200018.