Pith Number

pith:ZFJPFO2A

pith:2014:ZFJPFO2AQ7NOSQ4JZVIZPAZPA3

not attested not anchored not stored refs pending

Aspects of an internal logic for persistence

Jo\~ao Pita Costa, Mikael Vejdemo-Johansson, Primo\v{z} \v{S}kraba

arxiv:1409.3762 v2 · 2014-09-12 · math.RA · cs.CG · 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{ZFJPFO2AQ7NOSQ4JZVIZPAZPA3}

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	2026-05-18T02:42:53.516872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c952f2bb4087dae94389cd5197832f06eda17cac93a0fc468e725189bfd50669

Aliases

arxiv: 1409.3762 · arxiv_version: 1409.3762v2 · doi: 10.48550/arxiv.1409.3762 · pith_short_12: ZFJPFO2AQ7NO · pith_short_16: ZFJPFO2AQ7NOSQ4J · pith_short_8: ZFJPFO2A

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/ZFJPFO2AQ7NOSQ4JZVIZPAZPA3 \
  | 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: c952f2bb4087dae94389cd5197832f06eda17cac93a0fc468e725189bfd50669

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd20fffb80a18eefcfdcda327ef048c81b89f958737883da5591ca4465abd9dc",
    "cross_cats_sorted": [
      "cs.CG",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2014-09-12T15:08:14Z",
    "title_canon_sha256": "ee66c8dce2f5bd6e8043426163ee314042c8ee5b4791fca6f0cc593f3b74ccdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.3762",
    "kind": "arxiv",
    "version": 2
  }
}