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 0x80c7fdead9279e68659eafffcd7236e6255dbcfb495009fb5a5cb87b3e8ba202. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bebaa2de-eae5-4924-8c6c-7096187780fc.json and https://artists.proofprofile.net/proofs/artist/bebaa2de-eae5-4924-8c6c-7096187780fc.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 0xb88584daf519bc055b48312ae20c859d5c647c1670330ba42ea4b56d9391ca3c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:12:31Z), 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/FRDKW2308289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b88840df7e4917add19c9e2824c4db139381aed9dca36b5695084e6dda281a1. 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/TCAJD2441200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a13d17ba33a5d912e30c77a04ad5d89c3f7d4dd83b909e81cba9c9920223112. 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/TCAJE2541397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c0171b5a18a99376b980d6cf53e2cbb790e0209244e592590ec55e366086fd. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:56Z), 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/TCAJE2575045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47127cf6f2168a4084768db2e202ef1c9f556d40cf7a819efd31c08a05dc72f5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:11:14Z), 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/TCAJE2575075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbc15486239f312227ab82a170040bd59e561828959b5da4d9a4ae4cbf20cec. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAJE2575157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2e88ef1dd42cc465d21fac3aa2aec080a8a72d13a631b363929446ab4ac843. 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/TCAJE2575177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4e95c7f5c3c8fd26fd098647bde28f75f73289744daa77d9e407661575fd90. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJE2575415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292f7dd64cbffbe8d245c3a3a5f69a3650e5e6164f0e7d9365e82afada44d5ff. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FXR952530197.