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 0x96b3e96cdb2cd4d276a5c89bc7ae3467ba6a63c26fdf2734dacd718d137c02b5. 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/6abc57c9-45d0-43d2-8f67-74e374b5df2f.json and https://artists.proofprofile.net/proofs/artist/6abc57c9-45d0-43d2-8f67-74e374b5df2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Malhada Vermelha (Trilha Sonora Original do Filme)
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 0xaa7befb354265f834231f309e63400d90f8dfca1b6f9898f4c582084bbfd4f13. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BR1QF2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c513e70d90dc6fa3117d027088bd0b83a8a966ebaf48a5639d6aa7102b5e10. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:17Z), 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/BR1QF2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e340d566e304537b0413b606ff4416e5e6727011fc7042326402cf2cb7bbb35. 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/BR1QF2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceae422131e262fc28c2ccc7eb94f34f86953fbc2fe9fe80a3223393beb19d4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BR1QF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceae422131e262fc28c2ccc7eb94f34f86953fbc2fe9fe80a3223393beb19d4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BR1QF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1155fc6982ff09014aa16ecbc6972cc068bc0ac93e1e2a2641ba61378bbb2b14. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BR1QF2400005.