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 0x10c7228f90acdb1cf81cbb702cdcdcc39f7c298e0bd3823c4400e87953920d97. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/517ca4aa-d8ff-40f8-b685-96358d645be6.json and https://artists.proofprofile.net/proofs/artist/517ca4aa-d8ff-40f8-b685-96358d645be6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heavy Metal L-GAIM Original Motion Picture Soundtrack Vol.1
重戦機エルガイム オリジナル・サウンドトラック Vol.1
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 0xa55c1c9d357bc805ee050093aa863552e90803781e6349589d70d10686f72906. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/JPKI08384037.
重戦機エルガイム オリジナル・サウンドトラック Vol.2
Heavy Metal L-GAIM Original Motion Picture Soundtrack Vol.2
重戦機エルガイム オリジナル・サウンドトラック Vol.3
Heavy Metal L-GAIM Original Motion Picture Soundtrack Vol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b5c42de4e573bb0fc92299d92ec6d8ae9d460f23e4e8787ea9cd92a1326b60. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPKI08485218.
あの日の僕をさがして（サントラ） (サウンドトラック)
「十年愛」サウンド トラック (サウンドトラック)
世界名作劇場 メモリアル音楽館 私のあしながおじさん
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c95fc9618145a704ccbebec43d404888757cbd1590e896123bfbcbdf4971c8. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/JPCO08852980.