Airmate is a Chinese air and ventilation brand and an OEM manufacturer of household electric fans for other brands sold in most countries and was founded as Tung Fu Electric Co. Ltd. in Taiwan in 1973
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 0xbcab9505d0704d6f231ba2d5146f4dba062e673c6ef1aeff9a45a59331533a35. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/399824d3-1ed7-4058-a824-91c7415c25a8.json and https://artists.proofprofile.net/proofs/artist/399824d3-1ed7-4058-a824-91c7415c25a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).