Pith Number

pith:4C5WDQIC

pith:2026:4C5WDQICWM6QPCNENRTJX5RBY3

not attested not anchored not stored refs pending

Litmus: Zero-Label, Code-Driven Metric Specification for Evaluating AI Systems

Apoorva Sharma, Kevin Paul, Prajjwal Gupta, Prasang Gupta, Sumanth Chundru, Vishal Bhutani, Waqar Sarguroh

arxiv:2606.23403 v1 · 2026-06-22 · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4C5WDQICWM6QPCNENRTJX5RBY3}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-23T03:14:19.145221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0bb61c102b33d0789a46c669bf621c6dd3460192fbe9ce914d3b4bb1e36dbdc

Aliases

arxiv: 2606.23403 · arxiv_version: 2606.23403v1 · doi: 10.48550/arxiv.2606.23403 · pith_short_12: 4C5WDQICWM6Q · pith_short_16: 4C5WDQICWM6QPCNE · pith_short_8: 4C5WDQIC

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4C5WDQICWM6QPCNENRTJX5RBY3 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e0bb61c102b33d0789a46c669bf621c6dd3460192fbe9ce914d3b4bb1e36dbdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93691792e876ef0df1b74e3937b153b231b04b8062cd204733722d9e6c84bda4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-22T14:26:48Z",
    "title_canon_sha256": "b4ba5a2201843d274c80e716b6007a6cda15cfcfcad2d86006b5dabd90feaa2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.23403",
    "kind": "arxiv",
    "version": 1
  }
}