A dace is a small fish that can be one of many different species. The unmodified name is usually a reference to the common dace (Leuciscus leuciscus). This, like most fish called "daces", belongs to
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 0x074fddf1991ef6667777aced0510399b5cf90c0a5109258161eb5b1dc7b970e3. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02bed917-6c68-4b28-a5ad-0a14b574b3c8.json and https://artists.proofprofile.net/proofs/artist/02bed917-6c68-4b28-a5ad-0a14b574b3c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).