Spirale is a French government programme to develop an early warning system which will use infrared satellite imagery to detect the flights of ballistic missiles during their boost phase, just after l
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 0xe05de9f71ba75ba00915e03466a9652333a55a6f02bab3035ca87bd9479f0767. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac2306a9-14b2-4a9a-aaaa-8d9838812c78.json and https://artists.proofprofile.net/proofs/artist/ac2306a9-14b2-4a9a-aaaa-8d9838812c78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).