thumb|Juno in the Underworld by Jan Brueghel the Younger, between 1626 and 1630|291x291px The underworld, also known as the netherworld or hell, is the supernatural world of the dead in various religi
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 0x0033c935acf4ee8a291ecb122977330b4e10bfa2bd657d885295c32c0e62f50b. 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/618df83a-d259-4653-9be1-22db780b59c0.json and https://artists.proofprofile.net/proofs/artist/618df83a-d259-4653-9be1-22db780b59c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).