cEVIN KEYS/S.P. DOWNLOAD with A. Valcic, K. Marshall & Philth
{"copyright_id":"0xddb52041d68a0f9922da81ecfa8a664cf81edbb52bb14d7ec0905888417bb60a","name":"cEVIN KEYS/S.P. DOWNLOAD with A. Valcic, K. Marshall & Philth","registered_at":"2026-06-16T19:01:10Z","symbol":"NIM1145758","token_address":"0x495f6e2d01e5b00d5c7ebb18d97d53fe081ad7a5","type":"artist","uuid":"548a2f6a-6ea3-4bef-8353-58b624bcc2fc"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb52041d68a0f9922da81ecfa8a664cf81edbb52bb14d7ec0905888417bb60a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/548a2f6a-6ea3-4bef-8353-58b624bcc2fc.json and https://artists.proofprofile.net/proofs/artist/548a2f6a-6ea3-4bef-8353-58b624bcc2fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).