Pith Number

pith:QAEJPSUW

pith:2013:QAEJPSUWPTFPLZ4Y6OYFMNTTGZ

not attested not anchored not stored refs pending

Unifying Parsimonious Tree Reconciliation

Martin Middendorf, Matthias Bernt, Nicolas Wieseke

arxiv:1307.7831 v1 · 2013-07-30 · q-bio.QM · cs.CE · cs.DS · 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{QAEJPSUWPTFPLZ4Y6OYFMNTTGZ}

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	2026-05-18T03:17:02.435627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

800897ca967ccaf5e798f3b0563673364fa3fffe490949bdfb46dbcac336bea6

Aliases

arxiv: 1307.7831 · arxiv_version: 1307.7831v1 · doi: 10.48550/arxiv.1307.7831 · pith_short_12: QAEJPSUWPTFP · pith_short_16: QAEJPSUWPTFPLZ4Y · pith_short_8: QAEJPSUW

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/QAEJPSUWPTFPLZ4Y6OYFMNTTGZ \
  | 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: 800897ca967ccaf5e798f3b0563673364fa3fffe490949bdfb46dbcac336bea6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "217fb1f08df4c92c24a5a6d684dc0e0d0d332d41c922a8b86a9e927199f12718",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.DS",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2013-07-30T05:47:27Z",
    "title_canon_sha256": "5007e97946239ec338e19b09dd181da738043ecf8762cc8fc014e453a1b5c905"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7831",
    "kind": "arxiv",
    "version": 1
  }
}