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 0xd991cf403d4659b786684b4dc8e6ab8f5b1a76f52c91f28f2f7d656eb954c03f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44c62986-4d65-403a-bc2f-e1d87a866823.json and https://artists.proofprofile.net/proofs/artist/44c62986-4d65-403a-bc2f-e1d87a866823.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SWEET LITTLE BUMBLE BEE (BRAZILIAN PHONK)
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 0x9e4b998c33d635f7b632954b7485a48338a4a84f19df69c5a0db40b736c2f53e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:26:34Z), 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/DGA0P2311518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0240bc5bd5abf38fb8fe7ecae4fe4d594ad01a3ec3ca162d953cd3d7d0eab921. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA0P2328259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e595b4dc0b5271b2d4225a22dc34985a7e36b32df74c9b188392ffcb7db878. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/FRX282408833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d5a807e817112d7118210594baf942bcc42ea04c249c63acaa3907d9a02b9e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:52Z), 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/FR96X2545442.