Kado may refer to: Kadu people Ikebana, also known as Kadō, Japanese flower arrangement Kado, Kalewa, Burma Kado, Togo KADO-CD, a low-power television station (channel 36, virtual 40) licensed t
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 0x3a59843ca5b34c2dcd93b12b0d2278c9030039c2e63996901f7280ee89b75f45. Chain 2 (Bitcoin): anchored in block 953980 (2026-06-16T17:16:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bc8a79e-e5ec-486c-b5f6-49c0a6379439.json and https://artists.proofprofile.net/proofs/artist/2bc8a79e-e5ec-486c-b5f6-49c0a6379439.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).