right|thumb|Rima as first glimpsed by Abel (and comic book readers) in the 1951 Classics Illustrated adaptation, published in 1952. Rima, also known as Rima the Jungle Girl, is the fictional heroine o
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a7e0be61ebc9b0e00af8fefe7b8445f1d0ec4a58992273c2397b20ed61f53c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcac5a78-dcdd-4d2c-92c4-a3fef8154179.json and https://artists.proofprofile.net/proofs/artist/dcac5a78-dcdd-4d2c-92c4-a3fef8154179.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).