Pith Number

pith:4SC7KLON

pith:2021:4SC7KLON5BMSTZ2I6MPOLPOJVG

not attested not anchored not stored refs pending

A Simple Linear-Time Algorithm for the Common Refinement of Rooted Phylogenetic Trees on a Common Leaf Set

David Schaller, Marc Hellmuth, Peter F. Stadler

arxiv:2107.00072 v2 · 2021-06-30 · cs.DS · cs.CC · math.CO · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SC7KLON5BMSTZ2I6MPOLPOJVG}

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	2026-07-05T03:17:03.798344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e485f52dcde85929e748f31ee5bdc9a98cc58abb4d6bbe04a0c7d867ca8a5316

Aliases

arxiv: 2107.00072 · arxiv_version: 2107.00072v2 · doi: 10.48550/arxiv.2107.00072 · pith_short_12: 4SC7KLON5BMS · pith_short_16: 4SC7KLON5BMSTZ2I · pith_short_8: 4SC7KLON

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/4SC7KLON5BMSTZ2I6MPOLPOJVG \
  | 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: e485f52dcde85929e748f31ee5bdc9a98cc58abb4d6bbe04a0c7d867ca8a5316

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82438ad8133a5abc97ccb0f78db661dff5af57a1c853a322f9c7675a76fc11b7",
    "cross_cats_sorted": [
      "cs.CC",
      "math.CO",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2021-06-30T19:45:18Z",
    "title_canon_sha256": "c7cd6809baf3a71cd60122e6b6caaba3b5f31735db325006a517a83055d3d4d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.00072",
    "kind": "arxiv",
    "version": 2
  }
}