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 0x257839d3fcaf6f50c5542ac7c0e3e96a35c2d713eef040bc189c4628a38c7e9c. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf094c5c-283a-4680-950d-566b7338c5bf.json and https://artists.proofprofile.net/proofs/artist/cf094c5c-283a-4680-950d-566b7338c5bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sinnoh Pokémon League Day (From "Pokémon Diamond & Pearl") [Lofi Mix]
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 0xdbe28fce712bdacf0634564247ee693d7671d8df4c4dad8f74cebd88c62cb61c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:34:28Z), 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/TCAFR2155984.
A Sweet Smile (From "Genshin Impact") [Lofi Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f51eeae66f6aad45d4f017d00aa6bcef69106619c2cfafc87c07dd49c3bdc20. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAFU2141910.
Twinleaf Town Day (From "Pokémon Diamond & Pearl") [Lofi Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc13408f98a281309f1039355d9965976be534c76bc9700923068e98c57b0ac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFX2126610.