Pith Number

pith:NQKDHSA5

pith:2013:NQKDHSA5RLZMU2RQEQQH5YVHIY

not attested not anchored not stored refs pending

Canonical Labelling of Site Graphs

Cambridge, Cambridge University, Edinburgh, Edinburgh University, Michael Pedersen (Department of Plant Sciences, Nicolas Oury (School of Informatics, Rasmus Petersen (Microsoft Research, Scotland), UK)

arxiv:1306.2405 v1 · 2013-06-11 · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQKDHSA5RLZMU2RQEQQH5YVHIY}

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	2026-05-18T03:21:21.066023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c1433c81d8af2ca6a3024207ee2a7462a95ad7291c67e30933500449a105997

Aliases

arxiv: 1306.2405 · arxiv_version: 1306.2405v1 · doi: 10.48550/arxiv.1306.2405 · pith_short_12: NQKDHSA5RLZM · pith_short_16: NQKDHSA5RLZMU2RQ · pith_short_8: NQKDHSA5

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/NQKDHSA5RLZMU2RQEQQH5YVHIY \
  | 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: 6c1433c81d8af2ca6a3024207ee2a7462a95ad7291c67e30933500449a105997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8284979c3d877dd0e8ac9cf55f584abaccc906bc986d2be434df3dd963334c1",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-06-11T02:02:41Z",
    "title_canon_sha256": "8ed14ed7a81133587e57b587624c87c98eebc2335183ad1fcf7dbccb9c9c0c89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.2405",
    "kind": "arxiv",
    "version": 1
  }
}