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 0x449deb134b08ac26953260a08a9130da23ff575192d383c2208a983a186c4b94. 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/6ef93650-c770-46fa-9cbc-0de79fb8d1bc.json and https://artists.proofprofile.net/proofs/artist/6ef93650-c770-46fa-9cbc-0de79fb8d1bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dragon's Dogma (Original Game Soundtrack)
スナックワールド (オリジナル・サウンドトラック)
Tekken: Bloodline (Soundtrack from the Netflix Series)
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 0x8680da83fd1ee28dd5473af4f8f2a11657f10d4d57b44d1a0876ede506a1124f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ8BZ2201675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2271a4c0b9489bcd5f3f1a6ae72dd8157e9e2e9097425e2475a9b59a87b797. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZ8BZ2201677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42304e39980f199fd4102b4acb45832e47ccec798c6e765daa62fe213c286c00. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:57Z), 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/QZ8BZ2201692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a436277799cf3b4ab20dca9723bf428852a9520e4313f8b21ad89b35433f956. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZ8BZ2201697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe672be96fa20531ef039fb488c3646eab68caaa9637cff114149d0e4e6b4edce. 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/QZ8BZ2201700.
The Edge of Dawn (From "Fire Emblem: Three Houses") [Vocal Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bdd264f3e81c15e3db15bdfada1ab963e92513b1e8394120aa06d77d5d4228. 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/QZGWW1955123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664de1e301f1cefaf79d256adbc517e06c512d99f9280cc04fee28f361610515. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPKI01511998.