Pith Number

pith:XPU64ZYW

pith:2009:XPU64ZYWV66UAPA3OBMLXUV7TE

not attested not anchored not stored refs pending

Footprints in Local Reasoning

Mohammad Raza, Philippa Gardner

arxiv:0903.1032 v2 · 2009-03-05 · cs.SE · 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{XPU64ZYWV66UAPA3OBMLXUV7TE}

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	2026-05-18T01:37:40.515059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbe9ee6716afbd403c1b7058bbd2bf9922dd1936b4bd5216574f995eec0a2bc5

Aliases

arxiv: 0903.1032 · arxiv_version: 0903.1032v2 · doi: 10.48550/arxiv.0903.1032 · pith_short_12: XPU64ZYWV66U · pith_short_16: XPU64ZYWV66UAPA3 · pith_short_8: XPU64ZYW

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/XPU64ZYWV66UAPA3OBMLXUV7TE \
  | 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: bbe9ee6716afbd403c1b7058bbd2bf9922dd1936b4bd5216574f995eec0a2bc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f694c42912ebee9f88d39eed21ddfec4293b3dd8852069567aad1266161a2e80",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2009-03-05T17:06:05Z",
    "title_canon_sha256": "8f35086104452b79bf6d51ff4aab6632ec8973ac347d5d0031e5fe0059b77086"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1032",
    "kind": "arxiv",
    "version": 2
  }
}