Indelible is the fourth book in the Grant County series by author Karin Slaughter. It was originally released in hardback in 2004. Previous books in the series are Blindsighted, Kisscut, and A Faint C
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 0x8ab4f80c5c48aa419bf47eb3fde89080c50846e7d4d91e8a984db9b66ee3bfe0. 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/41a3d865-71a4-4339-b896-48f65900d958.json and https://artists.proofprofile.net/proofs/artist/41a3d865-71a4-4339-b896-48f65900d958.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).