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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bb8d8a1389c2f1b52f8a247dc733c6155621298071b52503b9acd99f652beb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e2ae2b1-606d-45c6-acc4-8114f7c9e356.json and https://artists.proofprofile.net/proofs/artist/7e2ae2b1-606d-45c6-acc4-8114f7c9e356.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Save The Dog / Epic Heroes / Mighty Party (Ad Song)
Dudi Dudi Dam Dam Dudi Dudi Dam Mambo Matikane Tannhäuser
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1549bbaabc0c8b5dddef65ff9461b8c2277c9fa4a5a5fca676194486f5cac57c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZES92566087.
Sunshine, Rainbow, White Pony 阳光彩虹小白马 Matikane Tannhäuser
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92245bfee34f6c02863d258c93bd80234ca1ae62292a5700a5d7379ce9a817e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMEM2516548.
Sunshine, Rainbow, White Pony 阳光彩虹小白马 Momoi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a5b45147361f64fd9f1047c733dbd507f420c0d4446e5771276c739df8aeed. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZMEQ2532249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da01adc3402ceaab12606599cc8cf0f88716bd4eb8760cdd338473abcf8f394. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7X2535906.
大展鴻圖（Blueprint Supreme）Saiba Momoi Cover