1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x560a560ec20179ab7d36bd4ee6691abe317cdfcdb26c3b7e269888a3d691e64b. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/191c3490-7e1c-4585-b1bc-edfb78d85a1a.json and https://artists.proofprofile.net/proofs/artist/191c3490-7e1c-4585-b1bc-edfb78d85a1a.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 → block OTSBitcoinBlock must exist at that height 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 0x2dddbaaa00328b1d2cc5b1fbbdde5532336d31e016cff7bd62e7c37fa21f82c4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZGLS2013498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dddbaaa00328b1d2cc5b1fbbdde5532336d31e016cff7bd62e7c37fa21f82c4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:20Z), 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/QZGLS2013498.
Mas Presto Ven Palomba / La Rosa Enflorese
La Monja Enamorada En Fontevrault (Cantiga 59)
Tesoros de Al-Andalus. Música Clásica De Los Reinos De Taifas, Siglos Xl-Xll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7635ee9e02e4e7bcada8ef06124d6ba7a6077197160006eaa8f91439bdf14b3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES7730808023.