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 0x6b9c23ecb7848f410bb1da6467d0aa4847af2bb6adb4aaa52d89633d8bc212a3. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3919f26-2015-48e7-9217-2dd6d8a794fc.json and https://artists.proofprofile.net/proofs/artist/e3919f26-2015-48e7-9217-2dd6d8a794fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mon petit garçon (La musique de la pub Lancia y unica)
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 0x9d6505a34ec42bde7977d50d4acda5176fbab4d6315b4e5e44c7b6f5accf05b1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:40:13Z), 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/ITQ031300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6505a34ec42bde7977d50d4acda5176fbab4d6315b4e5e44c7b6f5accf05b1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:41:26Z), 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/ITQ031300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf146c0acd586cbe0d6f5ebcb187c5025b16f8d5686f4aca9195e2601cdca4ad2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITT4X2500015.
The Ancient Magus' Bride SEASON2 Original Sound Track 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886191589d68e05dc641276488eb78bbe4546ef4fa21f532982fe131303d3d85. 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/JPVI02304842.