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 0x1536222aa6980083baf094b603d0a3b2cb92d83c2a932e9ad52077b313c642cb. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5467eb70-d728-463a-9a40-51919312d539.json and https://artists.proofprofile.net/proofs/artist/5467eb70-d728-463a-9a40-51919312d539.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sa Se Déjean (Le groupe mythique de Haïti)
Best of Les frères Déjean de Pélion-Ville, vol. 2 (Le groupe mythique de Haïti)
Best of Les frères Déjean de Pélion-Ville, vol. 3 (Le groupe mythique de Haïti)
Best of Les frères Déjean de Pélion-Ville, vol. 1 (Le groupe mythique de Haïti)
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 0x53cdb56ed581725e5d1ff9e242ae59eb3f88b0d51f27a91774064411f4d0ae01. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGJ1010577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00990ad3e76865d6541f362c9bb83c56d49aba2335e9cf438d01a8e1ed2840ef. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:25:58Z), 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/USCGJ1010579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c1ca595cb53381a6ce2221da7003286368bd0a783d3c0c60da194b4aa604a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:01:52Z), 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/USCGJ1010580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5874629afc357b796721e6a21ee1d4d95e342507f2cf1b5698e315aeddf0e516. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S1441150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce84ac75c0e2f73325fdf8567a17892ab4f3a6785d151db8db2da29bc9d17e4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:39:07Z), 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/FR10S1441154.