Winter in Eden is a 1986 science fiction novel by American author Harry Harrison, the second in the Eden series. It tells an alternate history of planet Earth in which the extinction of the dinosaurs
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 0xd06b54cfe57155c3db12d6948f6ab4f2f1339e913f159611c70c5733a05ee7c4. 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/71298fec-c973-4d59-906f-22fede1b2451.json and https://artists.proofprofile.net/proofs/artist/71298fec-c973-4d59-906f-22fede1b2451.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).