Pith Number

pith:P4WFGIA2

pith:2012:P4WFGIA2XNNL5G6IKPAIETJXD6

not attested not anchored not stored refs pending

Diffusion of individual birds in starling flocks

Andrea Cavagna, Fabio Stefanini, Irene Giardina, Massimiliano Viale, Silvio M. Duarte Queiros

arxiv:1206.4434 v2 · 2012-06-20 · q-bio.PE · 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{P4WFGIA2XNNL5G6IKPAIETJXD6}

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	2026-05-18T03:33:49.975056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f2c53201abb5abe9bc853c0824d371fb97e41bb979639217e3a6a18208d1d2a

Aliases

arxiv: 1206.4434 · arxiv_version: 1206.4434v2 · doi: 10.48550/arxiv.1206.4434 · pith_short_12: P4WFGIA2XNNL · pith_short_16: P4WFGIA2XNNL5G6I · pith_short_8: P4WFGIA2

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/P4WFGIA2XNNL5G6IKPAIETJXD6 \
  | 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: 7f2c53201abb5abe9bc853c0824d371fb97e41bb979639217e3a6a18208d1d2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b6bb76b5214f3f7af8709a80d8dc1d5cdac9c46c5a0930f06037c608630bc34",
    "cross_cats_sorted": [
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-06-20T09:52:31Z",
    "title_canon_sha256": "281d7354d0190bb6b5f351269c5cbaf81035091608bb614394f5e89a5455d442"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.4434",
    "kind": "arxiv",
    "version": 2
  }
}