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 0x12dcd1f49cea043748c260de9be901c51db835ac336b4d32f65dd29b19012588. 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/ecab28f6-f1f4-4213-aa33-bb528a6e869b.json and https://artists.proofprofile.net/proofs/artist/ecab28f6-f1f4-4213-aa33-bb528a6e869b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SIGNATURE REVIEW (GETTN' DA KREAM) (SIG EDITION)
SIGNATURE REVIEW X WARRIORz (JSIG DJMIX)
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 0xac115307296b8be190b183a1a26a1f48c7a4a6b2c50a6698fb02b7aeab5a0f15. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:17:55Z), 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/SE6QE2411762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91424bb9805b6ff8af3b9922147d5c65795c745a315b7ef0250b0849eba53e3d. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:19Z), 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/SE6SA2444493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb0f580f89e5dfc3f636797ad04e7ab88baab7715c3e2efe1c870ff34154639. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5BU2594453.