Pith Number

pith:B7FJGXRR

pith:2015:B7FJGXRRCWLJ2LLRF3YAK4RVOG

not attested not anchored not stored refs pending

Sharing HOL4 and HOL Light proof knowledge

Cezary Kaliszyk, Thibault Gauthier

arxiv:1509.03527 v1 · 2015-09-11 · 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{B7FJGXRRCWLJ2LLRF3YAK4RVOG}

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	2026-05-18T01:33:22.972802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fca935e3115969d2d712ef005723571b35320e2cfdbc0920a5d9ac52546f010

Aliases

arxiv: 1509.03527 · arxiv_version: 1509.03527v1 · doi: 10.48550/arxiv.1509.03527 · pith_short_12: B7FJGXRRCWLJ · pith_short_16: B7FJGXRRCWLJ2LLR · pith_short_8: B7FJGXRR

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/B7FJGXRRCWLJ2LLRF3YAK4RVOG \
  | 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: 0fca935e3115969d2d712ef005723571b35320e2cfdbc0920a5d9ac52546f010

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc0b6bc98f7faa9db078523f65d3c816fee586dfd1e8ee2256b1155c89340a2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2015-09-11T14:18:04Z",
    "title_canon_sha256": "ff0798db524f7698e34f8caf1e70479aad087ec58b016f25d63e559d6675bad5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03527",
    "kind": "arxiv",
    "version": 1
  }
}