Pith Number

pith:2TN5JHT4

pith:2026:2TN5JHT4M4KXI3RG75BN2C3GB3

not attested not anchored not stored refs pending

ImProver 2: Iteratively Self-Improving LMs for Neurosymbolic Proof Optimization

Jeremy Avigad, Riyaz Ahuja, Sean Welleck, Tate Rowney

arxiv:2605.22885 v1 · 2026-05-21 · cs.AI · cs.CL · cs.LG · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2TN5JHT4M4KXI3RG75BN2C3GB3}

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	2026-05-25T02:01:28.644392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4dbd49e7c6715746e26ff42dd0b660eec6bece48aced007c42756da8c2806ba

Aliases

arxiv: 2605.22885 · arxiv_version: 2605.22885v1 · doi: 10.48550/arxiv.2605.22885 · pith_short_12: 2TN5JHT4M4KX · pith_short_16: 2TN5JHT4M4KXI3RG · pith_short_8: 2TN5JHT4

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/2TN5JHT4M4KXI3RG75BN2C3GB3 \
  | 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: d4dbd49e7c6715746e26ff42dd0b660eec6bece48aced007c42756da8c2806ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5552f64973ffa2734f2f8a8e24bdd88b0bb82250162e78bf57d2a8cd4036630b",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.LG",
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-21T02:20:26Z",
    "title_canon_sha256": "ed5412ad9422dcdd659246d5fe216471d67d3a15ab5c5700ce097c53887a9028"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.22885",
    "kind": "arxiv",
    "version": 1
  }
}