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 0xe348fc18381293de47beb79787461797b2ced05f5af1c9fb2ac96c0480e91917. 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/7dd31564-1b3b-4c17-8a7d-3deccdcab9d4.json and https://artists.proofprofile.net/proofs/artist/7dd31564-1b3b-4c17-8a7d-3deccdcab9d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Smoke Because I Don't Care Death 1 & 2
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 0x213f375923cb8c8f612f31f7872f981c04f9016086c9fdbfd69d9cb383a1c038. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNC2540816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2e2ffacb78e66190e8de3b2daafc78cab478d32c15827987911034102bb1b6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHNC2540817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9300a0108af585fbb1c25957266df1bdf1753f788491eba024ba9d1e7f36028. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:26:45Z), 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/QZHNC2540818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b355855dcc6e0945be5d11fd8fcedbaf24aad1f781dd25de019cd7fa1da8b8f. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZHNC2540820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4364d2317a3ef89a125cf4beab644c787641cc6013784cec0e39a04df8f47050. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZHNC2540821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a71a3657f2cca348b4b847ab4798037e6771dfc1df683e8dcd70fb86b60dda6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHNC2540823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394a62ae5d555aa10d04a3d02d9b72004a4f668b06d81c0f024f6403d7bedb15. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZHNC2540824.