Tanti ( also anglicised as Tanty, Tantee, Tatwa, Tantubaya, Tantubai, Tati, Tatin) is a Hindu surname of cloth weaving and cloth merchant community in India. The greatest concentration is believed to
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 0x17fbcff682b90b7db030936b80bcd5382ed468a7e282cabacac3807989cfe6cd. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aabb03a7-222d-492b-b5d5-17fd93d7ae48.json and https://artists.proofprofile.net/proofs/artist/aabb03a7-222d-492b-b5d5-17fd93d7ae48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).