Spacious千居 is an online residential real estate marketplace, connecting buyers and tenants with residential and commercial properties throughout Asia. Spacious was founded in 2013 by Asif Ghafoor, for
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 0x103c11f059f943f93117e55bf16b13ac9c7991bedfb5540f3a8d1afbee42fcde. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fcdd0ee-36a4-47e9-aa27-465056c68335.json and https://artists.proofprofile.net/proofs/artist/0fcdd0ee-36a4-47e9-aa27-465056c68335.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).