Pith Number

pith:OSJH3LWK

pith:2012:OSJH3LWKGPXGRF7YYCUYOOV5CX

not attested not anchored not stored refs pending

Rigidity, internality and analysability

Daniel Palacin (ICJ), Frank Olaf Wagner (ICJ)

arxiv:1211.6902 v2 · 2012-11-29 · math.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{OSJH3LWKGPXGRF7YYCUYOOV5CX}

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	2026-05-18T03:14:17.443524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74927daeca33ee6897f8c0a9873abd15c1f3a7cb55d562a46d557a1808933772

Aliases

arxiv: 1211.6902 · arxiv_version: 1211.6902v2 · doi: 10.48550/arxiv.1211.6902 · pith_short_12: OSJH3LWKGPXG · pith_short_16: OSJH3LWKGPXGRF7Y · pith_short_8: OSJH3LWK

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/OSJH3LWKGPXGRF7YYCUYOOV5CX \
  | 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: 74927daeca33ee6897f8c0a9873abd15c1f3a7cb55d562a46d557a1808933772

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a738901f8b3965269f88e0281bb385cc39378f33cff3c9967f48b19eb36fbac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-11-29T13:02:33Z",
    "title_canon_sha256": "ee3b587e179eeb110b7a3f695397f7b84e45daedaae82f857f713ca2c2be7857"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.6902",
    "kind": "arxiv",
    "version": 2
  }
}