Swamp Thing is a superhero and antihero appearing in American comic books published by DC Comics. Created by writer Len Wein and artist Bernie Wrightson, the Swamp Thing has had several different inca
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 0x77f2c5c7bfbe945c7c8c5abca91ac67ff402d89142e3ccab2a9dce26d1df535d. Chain 2 (Bitcoin): anchored in block 954046 (2026-06-17T04:53:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40c18cc2-42ed-4cf3-b68b-e861cc33ec87.json and https://artists.proofprofile.net/proofs/artist/40c18cc2-42ed-4cf3-b68b-e861cc33ec87.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.