Pith Number

pith:BZYXNZU4

pith:2009:BZYXNZU4BONKY5YIRRRVTDLTQG

not attested not anchored not stored refs pending

Determining interaction rules in animal swarms

Anders Eriksson, Johan Nystrom, Kolbjorn Tunstrom, Martin Nilsson Jacobi

arxiv:0905.0917 v4 · 2009-05-06 · physics.bio-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BZYXNZU4BONKY5YIRRRVTDLTQG}

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	2026-05-18T02:24:55.834402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e7176e69c0b9aac77088c63598d73819b69ed185fc2ae72b4b5482eecd68834

Aliases

arxiv: 0905.0917 · arxiv_version: 0905.0917v4 · doi: 10.48550/arxiv.0905.0917 · pith_short_12: BZYXNZU4BONK · pith_short_16: BZYXNZU4BONKY5YI · pith_short_8: BZYXNZU4

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/BZYXNZU4BONKY5YIRRRVTDLTQG \
  | 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: 0e7176e69c0b9aac77088c63598d73819b69ed185fc2ae72b4b5482eecd68834

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e509dbdf7a76c6b9230718225bbb581963819e917e7f521e288656fddce1bf33",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2009-05-06T20:38:03Z",
    "title_canon_sha256": "8c0aeddd62b8e31a3c9758ff64f4572f943ac8c26437c1b0e156b0e5633af913"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0917",
    "kind": "arxiv",
    "version": 4
  }
}