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 0x5b7d85035bcf165bd9683d518ee8da0fa93d3185c27d246e6c453460e59262cf. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff99367c-864a-4f12-94f2-e9c894efdf9b.json and https://artists.proofprofile.net/proofs/artist/ff99367c-864a-4f12-94f2-e9c894efdf9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las Violetas en vivo desde Ruido (En vivo)
Manu María: Rancheadas Sessions, Vol. 28
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 0x968161f229921e129aac4492a111ca649674af72439a5c14bc7109284b0ab1bc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWW2594713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d216a1b6989855f115aca137bef0a2773aacc07d6716927711fd611453b4b4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:18Z), 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/QZNWW2594714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda54d97c97469d7367282c441c0d49fa124d8ec3b7970c2ee0effff11a887ea. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:41Z), 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/QZNWW2594715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f954ef4005ec9761212b1b32c5f77ecf714ce80b9adba299f004c2dd8e8235. 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/QZNWW2594718.