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176 changes: 176 additions & 0 deletions LICENSE-APACHE
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

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50 changes: 45 additions & 5 deletions README.md
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# korg

**A causally-ordered, rewindable event-ledger for autonomous AI agents.**
*Every step your AI agent takes, recorded in a hash-chained ledger you can independently verify — tamper-evident, zero trust, no blockchain.*
**A tamper-evident, SHA-256-chained ledger for AI agents.**
*Every step your agent takes is recorded in a hash chain anyone can verify — edit one event and the chain names it. No trust in the producer, no blockchain.*

[![CI](https://github.com/New1Direction/korg/actions/workflows/ci.yml/badge.svg)](https://github.com/New1Direction/korg/actions/workflows/ci.yml)
[![License: MIT OR Apache-2.0](https://img.shields.io/badge/license-MIT%2FApache--2.0-blue.svg?style=flat-square)](https://opensource.org/licenses/MIT)
[![License: MIT OR Apache-2.0](https://img.shields.io/badge/license-MIT%2FApache--2.0-blue.svg?style=flat-square)](#license)
[![Rust 2021](https://img.shields.io/badge/rust-2021-93450a.svg?style=flat-square)](https://www.rust-lang.org)
[![Tests](https://img.shields.io/badge/tests-175%20passing-brightgreen.svg?style=flat-square)](https://github.com/New1Direction/korg)

<p align="center">
<b>English</b> · <a href="README.zh-CN.md">简体中文</a> · <a href="README.zh-TW.md">繁體中文</a>
</p>

---

## 30-second quickstart

Build the standalone verifier (~10s cold — it compiles only the ledger crates), verify a recorded Claude Code session, then rewrite one event and watch the chain catch it:

```bash
git clone https://github.com/New1Direction/korg && cd korg
cargo build --release -p korg-verify
cp spec/korg-ledger-v1/web/samples/session.jsonl /tmp/session.jsonl

./target/release/korg-verify /tmp/session.jsonl
# ✓ journal VALID — 6 events, hash-chain + DAG intact

sed -i.bak '4s/return a - b/return a + b/' /tmp/session.jsonl # rewrite the agent's edit

./target/release/korg-verify /tmp/session.jsonl
# ✗ journal INVALID — 1 problem(s):
# - seq 4: entry_hash mismatch (content was tampered) (exit 1)
```

![korg-verify catching a single rewritten event in an agent ledger](tamper.gif)

No Rust toolchain? Drop the same file into the [in-browser verifier](https://new1direction.github.io/korg/web/index.html) — it runs locally and sends nothing.

---

## Validated across three vendors (N=3)

The same `korg-ledger@v1` format ingests traces from three architecturally different production agents, with causal structure (spec §2a) preserved through the round-trip:

| Agent | Transport | Tool shape | Adapter | Tests |
|:---|:---|:---|:---|:---:|
| **Claude Code** | JSONL on disk + live hooks | Anthropic `tool_use` / `tool_result` blocks | [`adapters/claude-code`](adapters/claude-code/) — smoke-tested on a real 3,141-event session, zero dropped | 58 ✓ |
| **OpenAI Codex CLI** | WebSocket frames | OpenAI `function_call` + freeform `custom_tool_call` | [`adapters/codex-ws`](adapters/codex-ws/) | 11 ✓ |
| **Grok Heavy** | NDJSON stream | 16-agent parallel fan-out | [`adapters/grok-heavy`](adapters/grok-heavy/) | 14 ✓ |

Because all three land in one format, one verifier checks them all — and it has byte-identical Rust, Python and JS implementations, differentially fuzzed against each other with 0 divergences. Known limits are written down rather than hidden: see the [Grok Heavy limitations](adapters/grok-heavy/README.md#known-limitation-ingest-order-is-not-wall-clock-concurrency) (ingest order vs. wall-clock concurrency, cross-agent chatroom edges).

---

## Full demo: record → verify → rewind

![korg demo — record, verify, and rewind an AI agent session as a hash-chained ledger](demo.gif)

---
Expand Down Expand Up @@ -383,7 +423,7 @@ Korg is in active development, built on a **frozen `korg-ledger@v1` spec with cr

## License

Licensed under either of [MIT](LICENSE-MIT) or [Apache-2.0](LICENSE-APACHE) at your option.
Licensed under either of [MIT](LICENSE) or [Apache-2.0](LICENSE-APACHE) at your option.

---

Expand Down
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48 changes: 48 additions & 0 deletions tamper.tape
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# korg tamper demo — the chain catching a rewritten event.
#
# Runs the REAL `korg-verify` binary against a real korg-ledger@v1 journal
# (spec/korg-ledger-v1/web/samples/session.jsonl, a 6-event Claude Code
# session). One byte of history is edited with `sed`; the verifier names the
# exact event that was tampered with and exits non-zero. Nothing is scripted.
#
# Regenerate: cargo build --release -p korg-verify && vhs tamper.tape

Output tamper.gif

Set Shell "bash"
Set FontSize 15
Set FontFamily "DejaVu Sans Mono"
Set Width 1200
Set Height 480
Set Theme "Dracula"
Set Padding 20
Set TypingSpeed 40ms

# ── Setup: verifier on PATH, work on a scratch copy of the sample ledger ──────
Hide
Type "export PATH=$PWD/target/release:$PATH PS1='$ '"
Enter
Type "D=$(mktemp -d) && cp spec/korg-ledger-v1/web/samples/session.jsonl $D/ && cd $D && clear"
Enter
Show

# ── 1. An agent session, recorded as a hash-chained ledger ─────────────────────
Sleep 500ms
Type `jq -c '[.seq_id, .event.tool_name, .event.args.new_string // .event.args.command // ""]' session.jsonl`
Enter
Sleep 2.5s

# ── 2. Verify it — no trust in whoever produced it ────────────────────────────
Type "korg-verify session.jsonl"
Enter
Sleep 2s

# ── 3. Quietly rewrite history: make event 4 look like the buggy edit ──────────
Type "sed -i.bak '4s/return a - b/return a + b/' session.jsonl"
Enter
Sleep 1s

# ── 4. Verify again — the chain names the exact event that was changed ────────
Type "korg-verify session.jsonl; echo exit=$?"
Enter
Sleep 4s
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