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 0xa31c20cd0de2a2d1d3aa1be18fc4853e9a33e9676319bf6ce12af785c3eae05a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6477ca27-cd3e-42bf-99d6-74930612e6bf.json and https://artists.proofprofile.net/proofs/artist/6477ca27-cd3e-42bf-99d6-74930612e6bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
涙はふかない/スベり知らずシラズ
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 0x477646ce5de3cc118831a1279739438b1bc05f6fc2af3a56907f28525b3621ae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPN901805370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc785f296378cc8872aa4f35ebad8df0f68310b414324a211b16e48b48db105ab. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPN901901710.
カーリングシトーンズ デビューライブ！～カーリング・シトーンズと近所の石～
オイ！/ドゥー・ザ・イエローモンキー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a09278ffa95f202f6509baccc7542df4869a5c0e76f354058c98b887feaf5f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:42:24Z), 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/JPN902001590.
またか！いい加減にシトーンズ！～Live at 東京ガーデンシアター2021.03.16～