Pith Number

pith:K46AST2F

pith:2003:K46AST2FP3MHWUACRLHI3W2LQN

not attested not anchored not stored refs pending

Computer simulations of history of life: speciation, emergence of complex species from simpler organisms, and extinctions

Debashish Chowdhury, Dietrich Stauffer

arxiv:q-bio/0311002 v1 · 2003-11-04 · 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{K46AST2FP3MHWUACRLHI3W2LQN}

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	2026-07-04T16:42:23.368731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

573c094f457ed87b50028ace8ddb4b835094a06741ea22a3b1f672cfc083ec19

Aliases

arxiv: q-bio/0311002 · arxiv_version: q-bio/0311002v1 · doi: 10.48550/arxiv.q-bio/0311002 · pith_short_12: K46AST2FP3MH · pith_short_16: K46AST2FP3MHWUAC · pith_short_8: K46AST2F

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/K46AST2FP3MHWUACRLHI3W2LQN \
  | 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: 573c094f457ed87b50028ace8ddb4b835094a06741ea22a3b1f672cfc083ec19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b73b49672c44137f5b1167eca5d56d3a9a0e9f6928e26ae095eea635d3a814dd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2003-11-04T22:13:28Z",
    "title_canon_sha256": "bc9c01c669c8d9698f136a90ca050058003420ca793168cf2a6904eae36961ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "q-bio/0311002",
    "kind": "arxiv",
    "version": 1
  }
}