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 0xf7a0d6f68e98ce141c6d8ad03f8edca71bffa76d85720da33126299e97e302a1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc8db84f-1cf9-4233-a511-28bee0503ee3.json and https://artists.proofprofile.net/proofs/artist/bc8db84f-1cf9-4233-a511-28bee0503ee3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Motion of the Ninja (From "Ninja Gaiden 2")
Casino Night Zone / Sonic the Hedgehog 2
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 0x81d6a6bc9a3abe4030ad220834178cb88e547bcb996c567e1cffc75712359f35. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDY41532537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23428f7896e845f7e781fc093ec012b048ba580a3ebe2b1fcff2d4186073105b. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/BR9842000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf12f1169c17a19fb455ba59ff02b2467d3b17080ae4d585f4ce8ae53ba17916. 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/USDY42386241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d14154b9a850ab03c8f7d0274b7cb89bfec05f6c236c7221e08b11d0835c8ab. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USDY42386243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e1bff75c0f4426812fa2b1fe936c07a6b802d6b1328eb91f88c050ee0138ac. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY42386244.
The Ballad of Ace Lebaron (From "Age of Mythology")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d477e5800ae1f2ad8d6c8adc2dcb56c92b2ba87358e6c40859a26f28c25bc1. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/USDY42386245.
Successor of Fate (From Castlevania: Harmony of Dissonance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2bf475f7d424d9b8830c69f0e8463578b8e581d5cc92282ab858b16a7f036f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ2466525.