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 0x107fefd59d5b58f24ff8df2ccb33dd453dbe9b57385a58e913e3bcc99ce05a29. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fad7ba93-ef0d-4203-8054-3efe689edfbe.json and https://artists.proofprofile.net/proofs/artist/fad7ba93-ef0d-4203-8054-3efe689edfbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kimi ni Ale!!!! ～ Onaji Sora no Shitade ～
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 0x093b654c60d4fe175ea89e496d7f12c9bbafb746ded629f5d416e8fa3cc5bb66. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:51:12Z), 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/JPC231900353.
きまぐれ☆にゃんにゃんヒストリー!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fef7f0b84770c60206ecf6347b5ab5a8baa0bdd57acafcf5bc707b8ed5a8f7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:03:24Z), 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/JPPC01901986.