Pith Number

pith:7WJQZW4H

pith:2014:7WJQZW4HOGESED65SZJDKXINDU

not attested not anchored not stored refs pending

Geometry shapes evolution of early multicellularity

Ben Kerr, Eric Libby, Michael Travisano, William Ratcliff

arxiv:1403.7556 v1 · 2014-03-28 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WJQZW4HOGESED65SZJDKXINDU}

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	2026-05-18T02:37:51.855531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd930cdb877189220fdd9652355d0d1d108ae8cb570c8e7735ff7b1f5a217388

Aliases

arxiv: 1403.7556 · arxiv_version: 1403.7556v1 · doi: 10.48550/arxiv.1403.7556 · pith_short_12: 7WJQZW4HOGES · pith_short_16: 7WJQZW4HOGESED65 · pith_short_8: 7WJQZW4H

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/7WJQZW4HOGESED65SZJDKXINDU \
  | 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: fd930cdb877189220fdd9652355d0d1d108ae8cb570c8e7735ff7b1f5a217388

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d3437be4d27d733b57ea626b79304a0cb452d170aea0e6b679949fa8632c08f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2014-03-28T22:18:47Z",
    "title_canon_sha256": "4f64bce760e2061f8b3fe3d4c08a1106e978ff200529707427738cb81f05288a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7556",
    "kind": "arxiv",
    "version": 1
  }
}