Pith Number

pith:MTBU3CJY

pith:2018:MTBU3CJY5QGG6LJOAPI2IWCR72

not attested not anchored not stored refs pending

How lovebirds fly in crosswinds based on minimal visual information

Andrea Stein, Daniel Kress, Daniel Quinn, David Lentink, Eric Chang, Michal Wegrzynski

arxiv:1809.05365 v1 · 2018-09-14 · 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{MTBU3CJY5QGG6LJOAPI2IWCR72}

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	2026-05-18T00:05:43.820359Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64c34d8938ec0c6f2d2e03d1a45851fe8cb19c4a0e30539d8df43b85ab4d0485

Aliases

arxiv: 1809.05365 · arxiv_version: 1809.05365v1 · doi: 10.48550/arxiv.1809.05365 · pith_short_12: MTBU3CJY5QGG · pith_short_16: MTBU3CJY5QGG6LJO · pith_short_8: MTBU3CJY

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/MTBU3CJY5QGG6LJOAPI2IWCR72 \
  | 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: 64c34d8938ec0c6f2d2e03d1a45851fe8cb19c4a0e30539d8df43b85ab4d0485

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f8f2a2679bd9b9f4ab513a3b4c87c9fad04bce25c7f5b957664131d11023746",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2018-09-14T11:49:01Z",
    "title_canon_sha256": "d3b01393f1b76efe5fde15829828aeda2b78f30f73cc34e320ef9376a8a3051f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05365",
    "kind": "arxiv",
    "version": 1
  }
}