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 0xe772fadefbb8289081cff7f2d9ae5acf001f8244fee68263623711565e54c7c8. 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/096f06fd-d30e-4c27-8df2-d35ec216372c.json and https://artists.proofprofile.net/proofs/artist/096f06fd-d30e-4c27-8df2-d35ec216372c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Can We Act Like We Never Broke Each Other
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 0x36572d04fc25282ac37e5ff43d5b4f62d0d180c3b9d3dbdf89ebb3ba60f3ad37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHN2305561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5653cba3b7b060afa6ccafadc1189b5020bba3c23d8feb7ee7127b9fa8c171c3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0M2373878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bedbd6cdf1bf8c4991f3505f585f83f0f90d37e498855025b6bb32dfdaac29. 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/TCAHB2392942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2402610c8cd1ce47185ed4c593b923d18dd5b38daaa4c77b89c7cce82a0b0b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAHB2392947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42195b3ab2f5ff073940a246cf707a158da45ca7ccad5be2eb98a49124457837. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAHB2392957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918d11e20725fd1662f389d6185b621c125d18a14ac9630aae1456ef0dee4633. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAHB2392971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33e0da91fe794b820ba1065e35be6b3d2af776a59a51ef4bc1dafb5469d3ad5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAHA2308839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6484c4cbb3688458cedf9a8c039541d771ee2991fae4387bedc5dfe991eae152. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INS182000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31ddd52e67c9f0678979c9ab2428cb5652182a76c968938760f8ef851bd1bf3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INS181905568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e27bb4fc0d7126cea495007a44712e4e06f7a852fa2981a4eaf6992e554062. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202243961.