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 0x4a994850568313b5f38955ce31f4d8f4e987373a7fff275543892a2c61ed5cba. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a425ee82-b42a-4c94-90a0-fcd54b41a290.json and https://artists.proofprofile.net/proofs/artist/a425ee82-b42a-4c94-90a0-fcd54b41a290.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smash Ultimate, Earthbound (Original Game Score)
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 0x0a90b186ce3f185bc3ed413127498c368b65bfe11371be8fbe5748fdd019d03e. 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/TCAIY2447615.
Unfounded Revenge / Smashing Song of Praise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdde1289c365b3ed258679fcf3f00402e6af4c5c846d427535bddd289a48ca3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:55:27Z), 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/TCAIZ2447635.
Mario & Luigi, Dream Team, Final Antasma Battle Theme (Original Game Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccce772e86bc9b4f3806c9fe4e3cdacc32133454e8dc7c38101fa8d0c72b0649. 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/TCAIZ2448439.