Pith Number

pith:YYBCZ5RN

pith:2008:YYBCZ5RNSRIKEPPNOAUEX6Y22I

not attested not anchored not stored refs pending

Mathematical Models and Biological Meaning: Taking Trees Seriously

E. O. Wiley, Jeremy L. Martin

arxiv:0808.0287 v1 · 2008-08-03 · q-bio.PE · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YYBCZ5RNSRIKEPPNOAUEX6Y22I}

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	2026-05-18T04:11:49.403944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6022cf62d9450a23ded70284bfb1ad237c644825949747c1d8af4df47b1ab98

Aliases

arxiv: 0808.0287 · arxiv_version: 0808.0287v1 · doi: 10.48550/arxiv.0808.0287 · pith_short_12: YYBCZ5RNSRIK · pith_short_16: YYBCZ5RNSRIKEPPN · pith_short_8: YYBCZ5RN

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/YYBCZ5RNSRIKEPPNOAUEX6Y22I \
  | 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: c6022cf62d9450a23ded70284bfb1ad237c644825949747c1d8af4df47b1ab98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b733c1e79566d6c799ffafadc72fb9324e36c9182e9509e0b38b453ae61f3ba",
    "cross_cats_sorted": [
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2008-08-03T02:22:30Z",
    "title_canon_sha256": "d91f538cca9ee8500780b68e3d7bfabbc28fe946adc3040dd82c51d2ee377e62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.0287",
    "kind": "arxiv",
    "version": 1
  }
}