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 0x61f99cd74520441bf77ad13cf4052b5124a573a9014647bacfeae7c252be2290. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18721aa4-3355-42ca-a36f-41c5850b2d65.json and https://artists.proofprofile.net/proofs/artist/18721aa4-3355-42ca-a36f-41c5850b2d65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cantaré De Tu Amor P1 (Pistas Oficiales)
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 0xa3e49d565d57d39dd860c5ce04ca707f662f8de02d360724697c8cdab5d92644. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ2J21505215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5426b637142bf123519baf96b030e6ceacdbfdbabd32ae50cb83693e83ae9248. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ2J21505546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0791513ea07ee0457de01f81a1ef13a56cad925007329ec88198df77dacbda9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:49Z), 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/QZ2J21505548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db69b0be61d0ff3d3232ed392b4ac301d1999d0160b8376e4389fc0e7b01f30. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:08:55Z), 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/QZ2J21505551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a1d9182b56bb6cf9ede8557eff588e6395c15f8b6c348726abe52dd01070fb. 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/QZ2J21505607.