Eternal Lies is a 2013 role-playing game adventure campaign by Will Hindmarch and Jeff Tidball with Jeremy Kelle, published by Pelgrane Press for Trail of Cthulhu. Contents Eternal Lies is a massive
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 0x4ff10d6bf481a389d1149d719eef76ae61f9b5db62e99895fffe660754edf471. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c0e4562-becd-4eef-8295-6e69171ea43b.json and https://artists.proofprofile.net/proofs/artist/7c0e4562-becd-4eef-8295-6e69171ea43b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).