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 0x963514e8bb804d5c2fa93ba4f5b815aac34c1fb29c75821f718070a61c7bc279. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea6783cd-656d-47b9-8a17-56aa466d6793.json and https://artists.proofprofile.net/proofs/artist/ea6783cd-656d-47b9-8a17-56aa466d6793.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 0xd4ebf2de637c20c37d9f86c39aa7191b8886a76f3373959d0c022bcae4b0c46d. 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/GX3Q92596861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95164d7a0ac6d674cd73c45eb949a243245dd6ca7a4a78f3f59257ab97c2989a. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:12Z), 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/GX3Q92596862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e502de5264ac8b528bd819987a14e058a844b156a1e6d108088beafb926d87f. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GX3Q92596863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a9f388cf0305a86c8784e9ea62cafd8ba9d5eba6941e9c64667f043b6aeee9. 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/GX3Q92596864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d041add5cd787b9a5d94020e7ac81d6a90549a58d28138479a21ba5cdf8bfa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX3Q92596865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7ecddd6700ab3c209350b5d0c439736acb90b27419e784bdd7e59718ee5f85. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:08:12Z), 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/GX3Q92596866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dafbb0a8da3f6f87016430baa934fb7c7ee42386dbb48f78590f2e15838376. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GX3Q92596867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcde984cf245eb1b8242fae43e9acefd0f4ab980c6471d0544dffc8c86c7cd6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:09Z), 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/GX3Q92596868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7bd93433f61e0be0228e3e6d89e98c4ff121c10df1de8963c14a8517e2a9cd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX3Q92596869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736227471ff7ad16e073e0f99a3a0916fabf33423b8d614a1f85b773b88e273b. 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/GX3Q92596870.