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 0xa81e0a59176fdd85daf19b9b0dae77f7d5c279aac722f6df45c84ae98282125b. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8146b10e-217c-4e02-a18a-0188ca0908e0.json and https://artists.proofprofile.net/proofs/artist/8146b10e-217c-4e02-a18a-0188ca0908e0.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 0x59ac5b7e45ea1e02a0bb1def9b37d6f655882b3bf9d7eac15488d175e6d6f5fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US83Z2311351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9587664fd694cb04f059ffdacc8de193e0b24e2375d7e535632ad8758ec400c6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:29Z), 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/US83Z2334330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3175af3e5b2113b926561b544446c04255ce8d7acebea838d3b0ae38a40aedec. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US83Z2483095.
Ordinary Craziness / Relax the Retro / Boy Says
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308277b134e0dd241141649e0a17f3ba62dd7041bcc31caaa1058de5545479da. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:26:16Z), 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/DEU672500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8b1f723c49a5dae2267de121e3b8a21cc64fcd408b3aa7d3c97cbec0925305. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2311350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450bf1ccb35834d4e65505c75df1e679d003f0f707b19df5940484be1e1a8a16. 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/US83Z2110755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837ba18168f3d68b27d1ea92027b76689c41f9ac888eba89c553f967a7061c5b. 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/GBSCL2095045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15428eeab48782cab39bfd534a79066235e79c9b5254b075483692d620f035a9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:25:46Z), 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/US83Z2116471.