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 0xc9b150bd3ea5d645fa5fad2d1b31614e2650094fcace0ce7da151f4ba71bc310. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a324f22-b0a5-4c60-87ee-a94cc8b6c6ac.json and https://artists.proofprofile.net/proofs/artist/2a324f22-b0a5-4c60-87ee-a94cc8b6c6ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
君をのせて (「天空の城ラピュタ」より)
A Town with an Ocean View (From "Kiki's Delivery Service")
いつも何度でも (「千と千尋の神隠し」より)
Kujikesouni Naru Watashio Sasaete Kudasai
Carrying you (From "Laputa: Castle in the Sky")
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 0x645d167f422f6f265eb1dfa7c6319d7783c64b9a341c0d0ed20ac83d70464430. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/CALVP1920821.
Once Upon a Dream (From Sleeping Beauty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeefd840c86a21dcb7d58498762315074e164898230fb5aec4aaa0cdcd0bb9c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CAGOO2074053.
Nausicaä of the Valley of the Wind - Opening Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d6c4f9a4661534f68218a96c322b7ffded27cdbeed71e36d47f408a24a4354. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CACWV2320784.