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 0xb1bf4b30024a30ecb001302c0d4f92756ab39581c38ff44c0ee8c6dac2597053. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5de24ff-b9b8-49bc-b3dc-c47edad1fd03.json and https://artists.proofprofile.net/proofs/artist/d5de24ff-b9b8-49bc-b3dc-c47edad1fd03.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 0x6579da0cd9895d333bcec00fbce4e5c5e064d864db63aaa0ea9b41cacd9dea15. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:14Z), 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/QZHZ31908318.
Eu Nunca Perco, Ou Eu Ganho, Ou Eu Aprendo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944dfe169d6b408523d0c3430b30562bc84fd1e07b375ed313849b57ab395e81. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:47Z), 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/QZNJV2585972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8390d50a82576529a07bdca320d2b155ddd3fcc6552e4030cf532d07d33a657b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:50:48Z), 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/QZNJV2585977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0eee4613d40355675595fb81d49dca6999b4dc6cad5c6c835f2441478bb797. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJV2585976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7706bf28e7933817fc1c0660e0d469512273b257bb01291dcf3ae0f4de56ae0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJV2585975.