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 0x49c4882cedc82ee7d38ea8410dda0231bc4c882860b38231bd1c4552c4d7ae62. 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/3f977b31-80a3-48bc-bac7-7d130e87646e.json and https://artists.proofprofile.net/proofs/artist/3f977b31-80a3-48bc-bac7-7d130e87646e.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 0xba80a5783dbea72e2252ec4c0da0435859f6e17de16e4edf25b6538a7c37080b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPY392402201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c8bd8655f7d5b8ef67cfd81e7c4419349ae6ccfb39a6367a8f522f39ce82ed. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/JPY392402491.
うまれるまえからきみをしってる
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17c2668d99e0a6218b6b587c730d5e3920999408b564b50b0d7132ac9c09d32. 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/JPY392402238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee25383bb6446ba4a8922c5c6d5c09e4b6b864265430a6d2663b161b22da26db. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:31Z), 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/JPY392503038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb35fc045dfb2d7796d34ea158251f0e29b4a2d5c61953a759995b3b9946639. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/JPY392503042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c8bd8655f7d5b8ef67cfd81e7c4419349ae6ccfb39a6367a8f522f39ce82ed. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPY392402491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ad4b59b353ab49f31f3d7f471ab50d0f4c70850afd009b727b399e171d4831. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPY392503043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4667ac4e37a3c8e6411fa51910909f8087b04a0d302b5d6464e37ef2b45bebde. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPY392401865.