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 0x2824b0f66800fadb7f1bbf59378c5b000dc1325acadba51cb44d7644e7a8245e. 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/06e2e794-1e54-4577-8fa2-0e8293790849.json and https://artists.proofprofile.net/proofs/artist/06e2e794-1e54-4577-8fa2-0e8293790849.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 0x4f39b350034ef980931c90aba5c011713a31c65b75189f5ca6841d7e0fd4b60c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:02Z), 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/JPCR01401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5a004dd19db1e3ae556ab7132c43a954dd2845c3dac553fe9f9e0c40744d78. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPCR01407170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee829eff92496d3eb0cfc4277ab4dd5d146a93ecff52ff30bc2c7d15bcd2c307. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPCR01506970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5255872c0aadea788953d302cf5f5dc6c3ac210b1dfee5c8213fc040953c2739. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPZ921706063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3735c3e1b75c5542401ff74510be1bdc72e4cd0b475d6178a740afdc3a71c013. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPZ921706070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5255872c0aadea788953d302cf5f5dc6c3ac210b1dfee5c8213fc040953c2739. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:55Z), 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/JPZ921706063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdb7369b8089ddb03f638630132005a96c1d16c75d78ca493103f270d9fdc08. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPZ922102443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa805473c34d0a7ff4bff4dbf9cd7d9ab77569d94675d56d23ce0528305bcd474. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:20Z), 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/JPZ921902870.