The Culture is a fictional interstellar post-scarcity civilisation or society created by the Scottish writer Iain Banks and features in a number of his space opera novels and works of short fiction, c
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 0xa1a0401e9ace03e4464ffa76d90df7aa7b5624ec8c08203423aef3df19a092f7. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba700f47-b47f-44ea-ba93-7280beb034bd.json and https://artists.proofprofile.net/proofs/artist/ba700f47-b47f-44ea-ba93-7280beb034bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).