TL or Tl may refer to: Arts and entertainment Teens' love, Japanese erotic fiction marketed towards women Télé Liban, a Lebanese television network Turn Left (newspaper), Cornell University stu
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb5347b2bb257badeafb948c6fffccc611fe13ea6ff347ad52a195474e9526d. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d728e983-1443-4391-bb4d-ae983a75b73c.json and https://artists.proofprofile.net/proofs/artist/d728e983-1443-4391-bb4d-ae983a75b73c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).