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 0x0baca61dd39bd7a146faccdf55ad8a5a23028871525b75bde03f749a071b2b7f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2742d325-7d8c-4476-be80-46edefa2bfcc.json and https://artists.proofprofile.net/proofs/artist/2742d325-7d8c-4476-be80-46edefa2bfcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x77b2c400db131480b1b470c141216b36c4d0944840a0d345cb601112029f367f. 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/JPC231300019.
ワールド・ランプシェード(カバー)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b2c400db131480b1b470c141216b36c4d0944840a0d345cb601112029f367f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPC231300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a6c4b2f694886814b23d79b6e813a97b6da6ea90dbd83ef1b60b50224adf86. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:30Z), 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/JPC231300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad0ea2dbac7e1844cfe45edc3dbdd5524dcacbdd33d2f2b8dae2d463f1a6391. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPC231300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ce956caa2b737ceddd5acde3ca995c5ecaf497d752e93455e682a3730e8085. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:43:26Z), 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/JPC231300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dca0f587dc625ee0f5f3e95e47e0feff66f068aee85755b86563878ee94257. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPC231300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7683327c2cf40df0472edfb2824fdded1a02db031c9da91ca75990ce9066a6d6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:23Z), 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/JPC231400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeef2aa77573c12f6525051f650967716754787431b5b56ba300b84c3f55cae. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPC231400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18baa9d81e59279692eb0ba950db7d4ce83ce9f8978d58a41b22d5574622125a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPC231400557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56dbbe16c0d20a0acdd13047ad52e7d0ce457571b4679a848885eee498028ff. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPC231500367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37af5e2a9551c8d4ff26884040130fb224b041e765f5cd649f4dec748c7d8d0f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPC231500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb147fe5025abc6fd904268b54d4849ff5c9a8bbbdaae3a3cb67660635428fa. 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/JPC231500379.
Re:Set - The Best Of Ryo-Kun – (Standard Editon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb147fe5025abc6fd904268b54d4849ff5c9a8bbbdaae3a3cb67660635428fa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPC231500379.
Re:Alize Live Tour 2014 (Standard Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f141cae8e2473ae802ee264a8f54b68da8dae8a30e77df3efde0f7fdc3afcea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPT2248549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf48e89614d9e4b4a0666a3af8c43d36591f5868b2ae27af389c0b7854ad893f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPT2217966.
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