Disca is a genus of moths of the family Erebidae. The genus was erected by Michael Fibiger in 2007. Species Disca javai Fibiger, 2007 Disca arborita Fibiger, 2007 Disca hackeri Fibiger, 2007 Disca pa
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 0x12f7ff8efe6409be310aec6217257654d646546ef9bcdad2e100dbf8a46a5be6. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6d02acd-ae9d-42c0-9dbd-f565d6d4e172.json and https://artists.proofprofile.net/proofs/artist/d6d02acd-ae9d-42c0-9dbd-f565d6d4e172.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).