thumb|Lize Spit (2016) Lize Spit (born 1988, in Lier) is a Flemish Belgian writer. Her first novel, Het smelt, won several awards, including the De Bronzen Uil award, and has been translated into Fren
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 0x816ffc9a1ab011da6afb7f90f25ff09f60ced2da04f4a46169199d8f8f41afe2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72975197-d496-45fd-8154-e62c010236df.json and https://artists.proofprofile.net/proofs/artist/72975197-d496-45fd-8154-e62c010236df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).