cryptodb 2.4.3

NEDB — a versioned, self-compressing, time-traveling embedded database (replay-protected, idempotent, relational, searchable) with durable AOF persistence and a server daemon (nedbd).

CryptoDB

The database that can prove it never lied.

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CryptoDB is a content-addressed, hash-chained, time-traveling datastore. Every version of every record is an immutable, BLAKE2b-verified object in a Merkle DAG — nothing is ever overwritten, and the store can prove its own integrity on demand.

If your data is evidence — ledgers, audit trails, provenance, anything you may one day have to defend — CryptoDB makes the history itself tamper-evident and replayable.

Why CryptoDB

• 🔒 Tamper-evident by construction. verify() re-hashes every object against its content address. Flip a single byte on disk and it's caught — silently impossible to forge history.
• ⏪ Time-travel is a query. AS OF <seq> returns the exact state at any point. VALID AS OF <time> adds bi-temporal validity — what was true, as of when.
• 🧬 Causal provenance. caused_by links every record to the facts that produced it; TRACE walks the graph. Audit why, not just what.
• 🔐 Encrypted at rest (AES-256-GCM), RESP2 wire protocol, SQL / Redis / Mongo adapters, a nedbd-v2 server daemon.

Install

npm install cryptodb        # Node (native addon)
pip install cryptodb        # Python
cargo add cryptodb          # Rust

Reach for it when

Audit logs · financial & token ledgers · compliance trails · supply-chain provenance · anything where provable, replayable history is the product, not a nice-to-have.

import { NedbCore } from "cryptodb";
const db = new NedbCore();
db.put("ledger", "acct:alice", JSON.stringify({ balance: 100 }));
db.put("ledger", "acct:alice", JSON.stringify({ balance: 250 }));
db.getAsOf("ledger", "acct:alice", 0n);   // → balance 100, the past, intact
db.verify();                               // → true: nothing was tampered

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_{CryptoDB is a distribution of the NEDB engine, tuned for verifiability. Engine development happens upstream at Eth-Interchained/nedb. © Interchained LLC.}