Pith Number

pith:AHZNUGZH

pith:2006:AHZNUGZH7NYNITTXG6UWZSTKKQ

not attested not anchored not stored refs pending

Adhesion between cells, diffusion of growth factors, and elasticity of the AER produce the paddle shape of the chick limb

James A. Glazier, J. Scott Gens, Maciej Swat, Nikodem J. Poplawski

arxiv:q-bio/0601009 v2 · 2006-01-09 · q-bio.TO · q-bio.CB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AHZNUGZH7NYNITTXG6UWZSTKKQ}

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	2026-05-18T04:41:36.922373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01f2da1b27fb70d44e7737a96cca6a54373dd01d1a2f05ce6b1edc089fd6baea

Aliases

arxiv: q-bio/0601009 · arxiv_version: q-bio/0601009v2 · doi: 10.48550/arxiv.q-bio/0601009 · pith_short_12: AHZNUGZH7NYN · pith_short_16: AHZNUGZH7NYNITTX · pith_short_8: AHZNUGZH

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/AHZNUGZH7NYNITTXG6UWZSTKKQ \
  | 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: 01f2da1b27fb70d44e7737a96cca6a54373dd01d1a2f05ce6b1edc089fd6baea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7d2d174a8f3787efa259a4c3301efc7e3112f22d338299fbd34d6bdb1068b31",
    "cross_cats_sorted": [
      "q-bio.CB"
    ],
    "license": "",
    "primary_cat": "q-bio.TO",
    "submitted_at": "2006-01-09T01:18:29Z",
    "title_canon_sha256": "a1181d68bba22ef085548f51584cafc24edcaa71d2b1a1bd4573a663cbc6b146"
  },
  "schema_version": "1.0",
  "source": {
    "id": "q-bio/0601009",
    "kind": "arxiv",
    "version": 2
  }
}