Pith Number

pith:FEV4JZYQ

pith:2017:FEV4JZYQL5CFTYSWIB4D5TDMTC

not attested not anchored not stored refs pending

A Generic Framework for Engineering Graph Canonization Algorithms

Daniel Merkle, Jakob L. Andersen

arxiv:1711.08289 v1 · 2017-11-22 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FEV4JZYQL5CFTYSWIB4D5TDMTC}

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	2026-05-18T00:29:50.185461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

292bc4e7105f4459e25640783ecc6c98886cdce9c3d9b453403a5db41bc3e2af

Aliases

arxiv: 1711.08289 · arxiv_version: 1711.08289v1 · doi: 10.48550/arxiv.1711.08289 · pith_short_12: FEV4JZYQL5CF · pith_short_16: FEV4JZYQL5CFTYSW · pith_short_8: FEV4JZYQ

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/FEV4JZYQL5CFTYSWIB4D5TDMTC \
  | 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: 292bc4e7105f4459e25640783ecc6c98886cdce9c3d9b453403a5db41bc3e2af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff3cb35e44386e4324adffc1b6e57e2eaa22d648770e35c2dc66e1edd3e15a1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-11-22T14:17:08Z",
    "title_canon_sha256": "159b5179490fa0b2657f641574e6f5aa8c26ebdd84fa172b4229774b79d6eb1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.08289",
    "kind": "arxiv",
    "version": 1
  }
}