Doki can refer to: Doki (TV series), an animated children's television series, or the eponymous character from Discovery Kids Latin America Doki, one of the two central characters in the Korean car
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 0xc02bb6bdf1e2727e77d3ac6a3d4e96f0f4047525a506fc218727b045496a5432. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/401d3117-b264-42a7-aaf8-d2b0b18bfdb9.json and https://artists.proofprofile.net/proofs/artist/401d3117-b264-42a7-aaf8-d2b0b18bfdb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).