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 0xb5a613e912f9bc89daca9dcc8565e04e50e591a6059fc5fd8c30cbdb3bebc839. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73722ba9-abdd-4cba-8d7a-a76051115c73.json and https://artists.proofprofile.net/proofs/artist/73722ba9-abdd-4cba-8d7a-a76051115c73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Segura Esse Piseiro - Diferente Dos Iguais
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 0xc8a6416112bea9104ec4dfec984681d76140ced6df5e321acbccb5b217f90af1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:12:00Z), 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/QZEQU2047625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7acce2fbf4e9cd6181eabeeb518048b8a5017ee10414607a3ccc8ea8f57d403. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZEQU2201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d6bc2c9bded8ce719114200233b9b3ba59d21182e2c682e4c37244f4d6da40. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZEQU2253790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b14409c7a232330fe92e4741adca0b4620662dd93d86e96d4df6a1f8938ba2. 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/ESA112314603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce406e0e8bec98dabad6ce9a3560e85b7a6e03d77e7352836d63746abd929056. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ESA112318016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fdacbc4af3068ab706ba3e930b9d9ef77336c6f703a275bc45c5b348b07368. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA112433417.