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 0x1375a3eac0768d66e86019561dfdc0426168ccd62249943f22aa4166ad2363a1. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1448151c-1b09-4c81-8a30-9cbfb6679f3c.json and https://artists.proofprofile.net/proofs/artist/1448151c-1b09-4c81-8a30-9cbfb6679f3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Via Lattea - dal contrabbasso al cielo
Blues Connection (Italian Way to feel blues)
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 0x64c5cd289bb29bb9ce51b3821c8e358190f188ed22bec7951bd38f7658f1908a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ITI022200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc6c0ef460e5d16de754a146fd46d6cf7ebfd2aa5f9ad350d4cac77a57fc700. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:53Z), 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/ITI022200195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5cd289bb29bb9ce51b3821c8e358190f188ed22bec7951bd38f7658f1908a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ITI022200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5cd289bb29bb9ce51b3821c8e358190f188ed22bec7951bd38f7658f1908a. 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/ITI022200108.
Smooth Jazz Italian Songs Vol. 3 (Canzoni Italiane In Versione Smooth Jazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5cd289bb29bb9ce51b3821c8e358190f188ed22bec7951bd38f7658f1908a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITI022200108.