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 0x05f919bb95e30e949f04386ae64e59a1c6a912695e836d843ac923238207c650. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d540cef9-8d23-486e-83e7-57cb6e43c228.json and https://artists.proofprofile.net/proofs/artist/d540cef9-8d23-486e-83e7-57cb6e43c228.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
雪明かりの駅／三日月が綺麗だから
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 0xe43536ae47f2c34578f778d88d4e15b9f4d81723ab827fee0cceb284af4cb8d7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:55:24Z), 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/JPTE00504890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6471efb7490fbb495f545abcf7300f742e0cbdb9103cfdbfd25f19c4bb770034. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPTE00707490.
松原健之が歌う 平尾昌晃 永遠の名曲選集
二人でお酒を デュエットバージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca32de0ca6ef648cf645d01ac073b38aa9e5ca4de7a3fd3ab1041afbbcf43f6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:29:49Z), 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/JPTE01806200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7299aa3cfb851ca4d1fff0da44abe9573a88182516b0268d1e5d62b208b6b39f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:52Z), 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/JPTE01706080.
雪風/悲しみのニューヨーク (アンコール盤)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77ad3c469d2f648fd5c6f974b8be873e8a3f0e0eb2f0f99d66b0f3cf4a90333. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:19:37Z), 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/JPTE02107280.
金沢望郷歌(かなざわぼうきょうか) 2024
金沢望郷歌(かなざわぼうきょうか) 2024 アンコール盤
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dbef5feb9e6594d2ef35440c81df593e1672efd1abbb947c25a5226bd6c6c9. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPTE02504130.