Pith Number

pith:J7NLBGDK

pith:2018:J7NLBGDKBHZKEYLKCT6L64QERH

not attested not anchored not stored refs pending

Geometry, packing, and evolutionary paths to increased multicellular size

Colin G. Brandys, Elyes C. Graba, Peter J. Yunker, Shane Jacobeen, T. Cooper Day, William C. Ratcliff

arxiv:1802.03615 v1 · 2018-02-10 · physics.bio-ph · cond-mat.soft

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J7NLBGDKBHZKEYLKCT6L64QERH}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:15:16.214485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fdab0986a09f2a2616a14fcbf720489e33c63fb711b0d249090de0789ca26a2

Aliases

arxiv: 1802.03615 · arxiv_version: 1802.03615v1 · doi: 10.48550/arxiv.1802.03615 · pith_short_12: J7NLBGDKBHZK · pith_short_16: J7NLBGDKBHZKEYLK · pith_short_8: J7NLBGDK

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/J7NLBGDKBHZKEYLKCT6L64QERH \
  | 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: 4fdab0986a09f2a2616a14fcbf720489e33c63fb711b0d249090de0789ca26a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46e846324d1f544b8bb5d1919b6e5b83fc046993aa6e0a114b9558708561a57d",
    "cross_cats_sorted": [
      "cond-mat.soft"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2018-02-10T16:28:19Z",
    "title_canon_sha256": "cb8b197e62882497e1836bccb0f491a7b9bbd5897a7a63a0a58aba8258cc3df0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03615",
    "kind": "arxiv",
    "version": 1
  }
}