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 0xa670979f9dc60f8bc4d1da2b1e55aee2603f338817146d1ca0b2820644322662. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1f6c7a7-dd5d-41e4-b4fe-30ff4175f38f.json and https://artists.proofprofile.net/proofs/artist/a1f6c7a7-dd5d-41e4-b4fe-30ff4175f38f.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 0xb2bd72dc62148c285c67468a509222f4b85db72c221406454b93ee954803b603. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FR0U91204803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffc30e52309a8c485fff0f1a11fa10b25149346be121c41147862abd77aad57. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:51:11Z), 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/FR0U91204807.
Rispetto a tutta la scena tekno italiana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1063b78e65fc3e924dbe900369f7a01b746b30c9d7119135827ed88f9c1a709. 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/FR0U91600977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafdc9e6a14476528eedff711983163f68b816760de504bbcee16279b0985fa3. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/FR0U91600978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2149300847619f8a4d6ee46d9f23465ca81980b369edcb0a249d10e21a7165a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:05:55Z), 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/FR0U91601399.