In J. R. R. Tolkien's fictional continent of Middle-earth, Mordor (; , ) is the realm of the Dark Lord Sauron. It lay to the east of Gondor and the great river Anduin, and to the south of Mirkwood. Mo
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 0x31ebe0f1696384dd11e34ef7b6e8e45f032f0e994adc25ff6bc0f8b2177cf166. 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/6851829e-d42c-445c-b7e1-198f84352049.json and https://artists.proofprofile.net/proofs/artist/6851829e-d42c-445c-b7e1-198f84352049.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).