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 0xd20f45f5ffa9a3c0c2c8171ea4cb71b5b018bedb9c96134fa958c7bbea81ca6e. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4508242-af04-49f5-b054-050355919969.json and https://artists.proofprofile.net/proofs/artist/e4508242-af04-49f5-b054-050355919969.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fire Emblem (From "Fire Emblem") [feat. Marc Papeghin]
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 0x80103212878efe1def8f77ae83c0cdfd34acba49f24ea0e7faeb3b6b7a08f818. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USE831559364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253fd0853d631030af6309f7d2dea2cfe3737bfaf8fde7ab5478ce2f25f6fcce. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USE831559383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7426d22955b2b14b1adc9aa55cfcd713c867037de85ee9a8506044dda2f3aa01. 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/USE831559390.
Black Knight 2000 (From "Black Knight 2000")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa634399523b393ecc338d85fc0e280d72cfcf52177080b61da9e37a52fda519b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGWW2071293.
Hell March 2 (From "Command & Conquer: Red Alert 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55ea68cd6d03b7e4843ddbe11578eaecc39b7af09c7cf3f07f7b928397fc17b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWW2071309.
Celestial Troupe (From "Valkyrie Profile 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2b003948463d2536e2f7683a340261b3fa4ae735476db440541512ba3e3527. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZGWW2071302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37038f3555136963f77f30fc3d7f69f1bcc653827763aaa3dbc12646dd44c16e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZGWW2071304.