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 0xb20d00d8ea44bd951dad68094474093a5339afacbebf4c49ef830391ae4e5bb7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c294f66-5c48-4b26-9e74-d2126da32010.json and https://artists.proofprofile.net/proofs/artist/4c294f66-5c48-4b26-9e74-d2126da32010.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 0xb2e7396580e0c7ccb497c3c4d640d7ba9060f93dce83c318bdec9c44c23807c2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:30:23Z), 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/JPC401606017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfdf1c1378b90929098f48ea762ed6b2341514c8aac482f64245db92ac9aa25. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPC401709027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1d8542c3afd36ed8d1beeb550f5002be9104cb5f4f3b363889faa6613ef4f2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/JPC401703098.
出会ってから付き合うまでのあの感じ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eed5618b2c4da2bf601238f061400510233a4104dec4eb97294cd004303091c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPC401703097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2470c7dc792c2c65299eda2dca58d5f59f93c7a6836ec95a213bd560d6bd3a2a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPC401806005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57969ed6522f417aa780c7a8dea3c377b2c445592e66ac44c823a062bcd7f65. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:43Z), 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/JPC401903069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95a0c51268309182f069a25a0c79e7ed768011ff7dd36e312309b5905cdb41a. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:34:04Z), 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/JPC402003001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb49c95e2bfd2be2846e3ded59725360100928961409c41fed907e55787afe2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:10:32Z), 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/JPC402010011.