Pith Number

pith:HNSMDWKB

pith:2014:HNSMDWKBX6D2EN5MS2FXV24JET

not attested not anchored not stored refs pending

A simple and optimal ancestry labeling scheme for trees

Mathias B{\ae}k Tejs Knudsen, Noy Rotbart, S{\o}ren Dahlgaard

arxiv:1407.5011 v2 · 2014-07-18 · 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{HNSMDWKBX6D2EN5MS2FXV24JET}

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	2026-05-18T02:17:52.043654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b64c1d941bf87a237ac968b7aeb8924f54768353dee3f710e4a6de2b51e6ebd

Aliases

arxiv: 1407.5011 · arxiv_version: 1407.5011v2 · doi: 10.48550/arxiv.1407.5011 · pith_short_12: HNSMDWKBX6D2 · pith_short_16: HNSMDWKBX6D2EN5M · pith_short_8: HNSMDWKB

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/HNSMDWKBX6D2EN5MS2FXV24JET \
  | 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: 3b64c1d941bf87a237ac968b7aeb8924f54768353dee3f710e4a6de2b51e6ebd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cabbcadf6db9e818c446244f25b848b1859ac2300c7737f4cd98fa7c6b7b0c63",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-07-18T14:36:13Z",
    "title_canon_sha256": "e928af0492554a80a8cd1074d4608c116ae76f967d536090d7e75a17bbaafb5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.5011",
    "kind": "arxiv",
    "version": 2
  }
}