Pith Number

pith:4WO57IHV

pith:2017:4WO57IHVHPJZ6VHO225AWVL4AS

not attested not anchored not stored refs pending

Nearest Common Ancestors: Universal Trees and Improved Labeling Schemes

Fabian Kuhn, Konstantinos Panagiotou, Pascal Su

arxiv:1707.08807 v1 · 2017-07-27 · 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{4WO57IHVHPJZ6VHO225AWVL4AS}

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	2026-05-18T00:39:19.425986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e59ddfa0f53bd39f54eed6ba0b557c04bb36077c8bd83ee407f4de976a228a80

Aliases

arxiv: 1707.08807 · arxiv_version: 1707.08807v1 · doi: 10.48550/arxiv.1707.08807 · pith_short_12: 4WO57IHVHPJZ · pith_short_16: 4WO57IHVHPJZ6VHO · pith_short_8: 4WO57IHV

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/4WO57IHVHPJZ6VHO225AWVL4AS \
  | 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: e59ddfa0f53bd39f54eed6ba0b557c04bb36077c8bd83ee407f4de976a228a80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c229d3b7a15d12fd3a80743bcb92c4d64596f783b730c5787f895dfe0aad1d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-07-27T10:05:33Z",
    "title_canon_sha256": "6f6140af1957f44c845fddf9a9689f877abc9cd6c6cf8d6a3817b3ceffc90fd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08807",
    "kind": "arxiv",
    "version": 1
  }
}