Pith Number

pith:XFCUL73G

pith:2011:XFCUL73GAIULAF4SWFLTE3BJMU

not attested not anchored not stored refs pending

New first trimester crown-rump length's equations optimized by structured data collection from a French general population

Bernard Beno\^it, Francis Vasseur, Marc Constant, Viet Chi Tran (LPP)

arxiv:1110.6631 v1 · 2011-10-30 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XFCUL73GAIULAF4SWFLTE3BJMU}

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	2026-05-18T03:33:50.216480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b94545ff660228b01792b157326c29650254d801bf0b7e963ccfa2f53921e448

Aliases

arxiv: 1110.6631 · arxiv_version: 1110.6631v1 · doi: 10.48550/arxiv.1110.6631 · pith_short_12: XFCUL73GAIUL · pith_short_16: XFCUL73GAIULAF4S · pith_short_8: XFCUL73G

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/XFCUL73GAIULAF4SWFLTE3BJMU \
  | 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: b94545ff660228b01792b157326c29650254d801bf0b7e963ccfa2f53921e448

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08f6642c22051f43a6d83866589ebc31cafe1ddbe288b1a95aed267c24bdc959",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2011-10-30T18:19:50Z",
    "title_canon_sha256": "0894ecac170d11bf6ee451accb15c60dff6b81f0a47f12974f67c00e69d16b9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.6631",
    "kind": "arxiv",
    "version": 1
  }
}