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 0x60e6db07d071f62634ab9faff10e1092447c008ee6c0ed49a2d9ba4f422f50b0. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a24bf96b-f97b-4492-a51f-8d16afec777d.json and https://artists.proofprofile.net/proofs/artist/a24bf96b-f97b-4492-a51f-8d16afec777d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grands yeux bleus (feat. Izabelle & Mickey Raphael)
Steady Blue Eyes (feat. Izabelle & Mickey Raphael)
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 0x5f5b725a6b0ddb291d30ade2d5ca17c46cd611f7dcc7b89c1c541f3bea6eaf71. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAJLO1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c0da193ed5ca6febe7714d20d7a911613e97885ae169a4f72c5977ea899a01. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAJLO1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afa13c69e9d3585c83e092d5275d1f0a77c9a1b8d8ac1287c450ae63892d2a4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAJLO1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b619b8670aaefc6e549849d671eb7913d2863da93bcb0de44a8e2de0a045a4c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAJLO1900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdeb04f31c1efd8b6db945a1b5552573b4f4de27311251ea88fc6a38bc3790d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/CAJLO1900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2419f0aa152186556b2073d54adf7f4e4614a354741e5847bb67062e55c0a5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:54:05Z), 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/CAJLO1900059.