"Empyre" is a comic book story arc published in July 2020 by Marvel Comics. This storyline follows the events of Incoming! with the genre of superhero crossover. Premise The Avengers, the Fantastic F
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 0x49f8627b2e4ba0bb31bd861c73ae53b0f868ca93818e982df8ca5fdcf8dd7526. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecd2cf54-cf54-4b90-87de-fbe612e92057.json and https://artists.proofprofile.net/proofs/artist/ecd2cf54-cf54-4b90-87de-fbe612e92057.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).