Pith Number

pith:ZTQKIGOH

pith:1999:ZTQKIGOHDS5JO3CN3PXKHKVM2V

not attested not anchored not stored refs pending

Collective motion of organisms in three dimensions

A. Czirok, M. Vicsek, T. Vicsek

arxiv:physics/9902021 v1 · 1999-02-09 · physics.bio-ph · q-bio

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZTQKIGOHDS5JO3CN3PXKHKVM2V}

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	2026-05-18T01:38:04.185527Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cce0a419c71cba976c4ddbeea3aaacd556e641f3238caafcd6779a7cd2626320

Aliases

arxiv: physics/9902021 · arxiv_version: physics/9902021v1 · doi: 10.48550/arxiv.physics/9902021 · pith_short_12: ZTQKIGOHDS5J · pith_short_16: ZTQKIGOHDS5JO3CN · pith_short_8: ZTQKIGOH

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/ZTQKIGOHDS5JO3CN3PXKHKVM2V \
  | 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: cce0a419c71cba976c4ddbeea3aaacd556e641f3238caafcd6779a7cd2626320

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b01063731030bc195c4f7607cf6c8ed3751e1e8ea1c81cde4f884897218b0410",
    "cross_cats_sorted": [
      "q-bio"
    ],
    "license": "",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "1999-02-09T09:49:46Z",
    "title_canon_sha256": "f2a9c761cac1de692864e15a6cb497e98c617416deba246d263630130af371e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/9902021",
    "kind": "arxiv",
    "version": 1
  }
}