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 0xcea16ff70a4840487a66e021fcd8d8459d1b09ec733fd923c28921be80a52434. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ea2d154-9446-41e8-a901-cf2d51d1839f.json and https://artists.proofprofile.net/proofs/artist/9ea2d154-9446-41e8-a901-cf2d51d1839f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roudoku Kissa Hanashi no Kago (Vol.6 Another Edition The Human Chair, The Restaurant That Has Many Orders, Rashomon)
Roudoku Kissa Hanashi no Kago (Vol.6 The Human Chair, The Restaurant That Has Many Orders, Rashomon)
朗読喫茶 噺の籠 (陸 Another Edition 人間椅子/注文の多い料理店/羅生門)
朗読喫茶 噺の籠 (陸 人間椅子/注文の多い料理店/羅生門)
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 0xb1f977313f0dd90effe0ad78b101ad50f930db2a6181686c314cdb6503fc4881. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPR292100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f4c4be0037efaf63babd7f728d98b669c756f8825ddb79ab96e37929239c99. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPR292100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08c009eb2309157aeb6a98db447d9df99fec8675801fb3c215fc6e5c1ad2b3e. 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/JPR292100015.