Pith Number

pith:HZALPWXW

pith:2019:HZALPWXWKZW3HYB24WD7QSFNZG

not attested not anchored not stored refs pending

GRUNGE: A Grand Unified ATP Challenge

Cezary Kaliszyk, Chad E. Brown, Geoff Sutcliffe, Josef Urban, Thibault Gauthier

arxiv:1903.02539 v2 · 2019-03-06 · 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{HZALPWXWKZW3HYB24WD7QSFNZG}

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	2026-07-05T00:20:12.635090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e40b7daf6566db3e03ae587f848adc98676e757c10beee1f630830313585c59

Aliases

arxiv: 1903.02539 · arxiv_version: 1903.02539v2 · doi: 10.48550/arxiv.1903.02539 · pith_short_12: HZALPWXWKZW3 · pith_short_16: HZALPWXWKZW3HYB2 · pith_short_8: HZALPWXW

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/HZALPWXWKZW3HYB24WD7QSFNZG \
  | 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: 3e40b7daf6566db3e03ae587f848adc98676e757c10beee1f630830313585c59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16c19124231a73866a242b38a4274604abd30020cde685f56cc40fc880ec09f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-03-06T18:36:16Z",
    "title_canon_sha256": "7752ef5cfa41f05d2f1a3de0ae34ba1543814204ba24491a07ae5c07d184da6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02539",
    "kind": "arxiv",
    "version": 2
  }
}