Pith Number

pith:A4Q2WAQI

pith:2012:A4Q2WAQIDRHUQQ3FAHSTZMLLC5

not attested not anchored not stored refs pending

Improved light extraction in the bioluminescent lantern of a Photuris firefly (Lampyridae)

Annick Bay, Heikki Suhonen, Jean Pol Vigneron, Peter Cloetens

arxiv:1209.4298 v2 · 2012-09-19 · physics.optics · 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{A4Q2WAQIDRHUQQ3FAHSTZMLLC5}

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	2026-05-18T03:36:06.298178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0721ab02081c4f48436501e53cb16b17535fe6745b52da9733834c0b4d87c578

Aliases

arxiv: 1209.4298 · arxiv_version: 1209.4298v2 · doi: 10.48550/arxiv.1209.4298 · pith_short_12: A4Q2WAQIDRHU · pith_short_16: A4Q2WAQIDRHUQQ3F · pith_short_8: A4Q2WAQI

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/A4Q2WAQIDRHUQQ3FAHSTZMLLC5 \
  | 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: 0721ab02081c4f48436501e53cb16b17535fe6745b52da9733834c0b4d87c578

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88a76af2327dc1892afe608dc17afa0da85ce5f20bb75bb3e097ad3c86d1a891",
    "cross_cats_sorted": [
      "physics.bio-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-09-19T16:21:49Z",
    "title_canon_sha256": "e6d654ea6f77ac4aab9d8cec8af085321fb57838b48a1b9331ce46920ec5739c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4298",
    "kind": "arxiv",
    "version": 2
  }
}