1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x01a2b63202c68951b8cffb3910688eb4a6867411bc023cdd4b13aba0005202e5. 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/03d16448-00cd-42e2-b21e-51954565ee6b.json and https://artists.proofprofile.net/proofs/artist/03d16448-00cd-42e2-b21e-51954565ee6b.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 → block OTSBitcoinBlock must exist at that height 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 0x03b7c416961637c303e32e5e0fe71865944b288eeee41743e4b5d0b98834ddd3. 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/PLUM71300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4504036fe519cfb6b1b6b9eacde68f9a304ad252f8a59b2f63e78f4eb293484. 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/PLUM71400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301530d6687edb193d87fc90acafe8447bffc9e25c8fef37d39ddc4c8e562597. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/PLUM71700127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c709b4b4ae10f80ef322ba1a20e7712a3add424564844c08661ad42ac8bdf4. 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/PLUM71700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de863404b856baca6c25295a4cceb8956efb6c48fe62e72a3ee12088aceada1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:08Z), 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/PLUM72000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f7d5dc4e97c9ffa1626b39911a138ef4c9aeefeb6ce86f10b5365c880120ee. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PLUM71900627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9de0572cff1c786e73081fcf95fc9c56fe757c765a853b8605a5d02207e3cf. 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/PLC592300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d933fcee37c451de82bdc93e0e00c6576d9140f525e4026a2a0122e8a62ba1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLG961810002.