Pith Number

pith:WK5U62DR

pith:2012:WK5U62DRM66ODJOR3OCHHFNFIB

not attested not anchored not stored refs pending

A Web Interface for Matita

Andrea Asperti, Wilmer Ricciotti

arxiv:1207.2892 v1 · 2012-07-12 · cs.LO · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WK5U62DRM66ODJOR3OCHHFNFIB}

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	2026-05-18T03:51:13.538904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2bb4f687167bce1a5d1db847395a54058e13965fd3620ac1457c5f9ff5404e4

Aliases

arxiv: 1207.2892 · arxiv_version: 1207.2892v1 · doi: 10.48550/arxiv.1207.2892 · pith_short_12: WK5U62DRM66O · pith_short_16: WK5U62DRM66ODJOR · pith_short_8: WK5U62DR

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/WK5U62DRM66ODJOR3OCHHFNFIB \
  | 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: b2bb4f687167bce1a5d1db847395a54058e13965fd3620ac1457c5f9ff5404e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aca7a3d5c069197c178cbf3a1596780735ac225554e3c2ad3dd64bcd2b7782e1",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-07-12T09:35:47Z",
    "title_canon_sha256": "8ccc2f497209bdafec1a80fac3052902505d0365898017a6a0ace3c4a2535737"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2892",
    "kind": "arxiv",
    "version": 1
  }
}