Dade may refer to: Dade (surname) Dade City, Florida Miami-Dade County, Florida Dade isometry Dade's conjecture Historical eras Dade (1135–1139), era name used by Emperor Chongzong of Western X
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 0x572f0cde8681c1460cb9ccada4d75e160cd37a96618a01fc0ff3dee09819585b. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8506a7f-49fb-46d4-9f30-5b13e82353c0.json and https://artists.proofprofile.net/proofs/artist/a8506a7f-49fb-46d4-9f30-5b13e82353c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).