T-money (; RR: timeoni) is a rechargeable series of smart cards and other "smart" devices used for paying transportation fares in South Korea. T-money can also be used in lieu of cash or credit cards
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 0xecdd0c33370931ed60c795ecdb7199e734cfa5517320449dcd2f70e6ae5b47b2. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1e58ea5-af82-4b2d-b1c3-ec4ca1ca2f46.json and https://artists.proofprofile.net/proofs/artist/a1e58ea5-af82-4b2d-b1c3-ec4ca1ca2f46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).