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 0x64d02e326e7b2f131b3ae53608fe6545c96059c1b10eec55241313e36063aaad. 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/2bc5773d-5574-41c8-af60-b2d1b8caafb1.json and https://artists.proofprofile.net/proofs/artist/2bc5773d-5574-41c8-af60-b2d1b8caafb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't Think Too Hard (feat. Cydnei Chyan)
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 0x5351ef7e7f9c96570dc8d039800b11094e75baf16796bb7fabcb884d7e476617. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:37Z), 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/QZHN52419209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c7bcca3e0c0bcbb05ece3ba5c9ea8e0ccbb71d5ef122d7a458c55007215d10. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:58Z), 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/QZHN52419212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016e1468735ef566e5304e468553a542d43a48f86439f113c35f6d2c3bc99327. 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/QMFME2461240.
100 Ways (Extended Version) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33366dbad0d6fe5c0b8020980fd6e85c6499524822d7f2e4bb288e99542f4837. 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/QMFME2528598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a049a843c5ef0a85ed432d554f2e5f7860b688cc85f48818570558cee475a6d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2330444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6c07980a7c5ec1f56590f5f11b9bad7a8518b66c84b9ae0aebb9831e2e137a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYY2037134.
Like 'Em All (Radio Version) (feat. Issa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cbb90edf7877a42e8ccb83526f3eeb3ab878121c3aaffc376978be2357fbb9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRC11100783.