Pith Number

pith:EPYFCFHO

pith:2013:EPYFCFHO3JSI53S2BF53LRGOZR

not attested not anchored not stored refs pending

PROOFTOOL: a GUI for the GAPT Framework

Alexander Leitsch (Institute of Computer Languages (E185), Bruno Woltzenlogel-Paleo (Institute of Computer Languages (E185), Cvetan Dunchev (Institute of Computer Languages (E185), Daniel Weller (Institute of Discrete Mathematics, Geometry (E104), Martin Riener (Institute of Computer Languages (E185), Mikheil Rukhaia (Institute of Computer Languages (E185), Tomer Libal (Institute of Computer Languages (E185), Vienna University of Technology)

arxiv:1307.1942 v1 · 2013-07-08 · cs.LO · cs.HC · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPYFCFHO3JSI53S2BF53LRGOZR}

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	2026-05-18T03:19:03.035456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23f05114eeda648eee5a097bb5c4cecc41cb041915589388aa01237a42c2af3d

Aliases

arxiv: 1307.1942 · arxiv_version: 1307.1942v1 · doi: 10.48550/arxiv.1307.1942 · pith_short_12: EPYFCFHO3JSI · pith_short_16: EPYFCFHO3JSI53S2 · pith_short_8: EPYFCFHO

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/EPYFCFHO3JSI53S2BF53LRGOZR \
  | 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: 23f05114eeda648eee5a097bb5c4cecc41cb041915589388aa01237a42c2af3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfa2a65d88fc9f8fe0b67b0f18f645560190f8aae0b7d5d3bdc587728d528059",
    "cross_cats_sorted": [
      "cs.HC",
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-07-08T04:41:18Z",
    "title_canon_sha256": "85b47b2f443fe406b827b458332b3331bf33e7f4db5f42967a2be814a6fe8312"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1942",
    "kind": "arxiv",
    "version": 1
  }
}