Pith Number

pith:7UOM7LQ3

pith:2015:7UOM7LQ3OLG4GEKDF5ID6NSJOY

not attested not anchored not stored refs pending

The Vampire and the FOOL

Andrei Voronkov, Evgenii Kotelnikov, Giles Reger, Laura Kov\'acs

arxiv:1510.04821 v2 · 2015-10-16 · 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{7UOM7LQ3OLG4GEKDF5ID6NSJOY}

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	2026-05-18T01:25:11.215397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd1ccfae1b72cdc311432f503f364976198aef571e200fd6ac9d47c606e22760

Aliases

arxiv: 1510.04821 · arxiv_version: 1510.04821v2 · doi: 10.48550/arxiv.1510.04821 · pith_short_12: 7UOM7LQ3OLG4 · pith_short_16: 7UOM7LQ3OLG4GEKD · pith_short_8: 7UOM7LQ3

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/7UOM7LQ3OLG4GEKDF5ID6NSJOY \
  | 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: fd1ccfae1b72cdc311432f503f364976198aef571e200fd6ac9d47c606e22760

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33197f17482f581ffce58ef6ce2b6f319aea729b4768d4fa89e02cbeedffa993",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-10-16T09:24:17Z",
    "title_canon_sha256": "e5cf47a03ca2d3be146aafa1499a7fbc62436ebf08b90e53123e7f43266f4651"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.04821",
    "kind": "arxiv",
    "version": 2
  }
}