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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45fc16d92c9be590c086cd448ff89641c9ef283ccd59aa0ac8a21c8365046da. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/119af2c8-b179-4486-97d6-40847c79c897.json and https://artists.proofprofile.net/proofs/artist/119af2c8-b179-4486-97d6-40847c79c897.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quiero Que Me Lleve Tu Amor (Cover from "Señales del Fin del Mundo")
Cata (Covers From "Cata e i misteri della sfera")
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f58e2e27630f2a4e4267d376f8d9bad52e3fbdf6f2aa7dfb413a878e90e4aa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITC091400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3503187cf2d8f7a0d3504bab8edd206593de1368676dce1921fdf199328e8d1e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITC091400591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ffe9fe90cd707e6123cfed00ce9682c86548b041458c6b60c906f98203e8e. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ITC091400595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03931e38a8831fd8f72cdaee52a4472c01ceb6901b54fcbddec475d591c64350. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITC091400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f9b73a9875dab813ccd8da32c93d81296ffde84fdac9ab5a5b4bc7dfd5102f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:21Z), 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/ITC091400599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01137e6f8dea1169e4bcf4045f1490a7825043bf5c1b75a346d7fbf9676a67f5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITC091400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a3d31e619d81ff7525912d827b147b5662a03567c75f9d611fd433390bd83. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/KRB462101111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a09c42ecfc080b751fd682902ce988c672de191c8f5daf4d05e6d07b362598. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR0U91402315.