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 0xba80a6745cbdc4798a6bdf0712398d795e3e9449a0fe52066af04475f7a7566c. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1a3d30d-b14c-4237-bec4-09b6ecf6da29.json and https://artists.proofprofile.net/proofs/artist/e1a3d30d-b14c-4237-bec4-09b6ecf6da29.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 0xcbcbf39aa5d27614148bdea08f83d604b0a14a83962aa54de228b03cfa18edd8. 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/USSM11804331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc489c5e08a25a72388225968d8ef46b17faf4c151d07df399234e3aff0c022c7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM10026325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed28b9bd60bd236110de09e23db71aedb500260838bf6e23a4a58924eb1cd92. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USSM11203436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0f49ea2ab1e9d3664e4de4313feba57d25529be2208c0c4dfa8a3fa687c8d7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USSM11203439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d1eab0cebcf700bbe081fe3980ceaf547964ad3a66d06c7cf880f1750f7753. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:55:45Z), 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/USSM11804242.
The Continental (You Kiss While You're Dancing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa438b571fbd5d5fc717caff78d2ff78c5c88a1b48507e6e7f5aaf37e1bfebbb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:41Z), 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/USSM10026573.