99 may refer to: 99 (number), the natural number following 98 and preceding 100 one of the years 99 BC, AD 99, 1999, 2099, etc. Art, entertainment, and media Film, television and radio Agent 99 i
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 0x34df69dc739c228bec1ccde98a8593043d1408fd81e502d29154630a33742583. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7aa152e1-7144-4259-9959-d340ce5414e3.json and https://artists.proofprofile.net/proofs/artist/7aa152e1-7144-4259-9959-d340ce5414e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).