Pith Number

pith:QM5HDOZU

pith:2005:QM5HDOZUTNOKA2CQVHC77YG5OK

not attested not anchored not stored refs pending

The simplest model of spatially distributed population with reasonable migration of organisms

Michael Sadovsky

arxiv:q-bio/0510004 v1 · 2005-10-02 · 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{QM5HDOZUTNOKA2CQVHC77YG5OK}

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	2026-05-18T01:05:07.026400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

833a71bb349b5ca06850a9c5ffe0dd72813ba523e08b7689f07d70ee4ccca403

Aliases

arxiv: q-bio/0510004 · arxiv_version: q-bio/0510004v1 · doi: 10.48550/arxiv.q-bio/0510004 · pith_short_12: QM5HDOZUTNOK · pith_short_16: QM5HDOZUTNOKA2CQ · pith_short_8: QM5HDOZU

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/QM5HDOZUTNOKA2CQVHC77YG5OK \
  | 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: 833a71bb349b5ca06850a9c5ffe0dd72813ba523e08b7689f07d70ee4ccca403

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec0eb799e72bc87ebc6390ce3a018d015fb8fb4dd1b215051d2f3c00dae908d0",
    "cross_cats_sorted": [
      "q-bio.QM"
    ],
    "license": "",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2005-10-02T05:58:47Z",
    "title_canon_sha256": "fb392772aac65d1b38a2df0d1651b534c12a5b1e7ed8e5847dc24504f26d24f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "q-bio/0510004",
    "kind": "arxiv",
    "version": 1
  }
}