Pith Number

pith:W2W7YB42

pith:2013:W2W7YB42HQPXGGF2F6UZWXRMCL

not attested not anchored not stored refs pending

An active poroelastic model for mechanochemical patterns in protoplasmic droplets of Physarum polycephalum

Harald Engel, Markus B\"ar, Markus Radszuweit

arxiv:1307.0670 v1 · 2013-07-02 · nlin.PS · 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{W2W7YB42HQPXGGF2F6UZWXRMCL}

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	2026-05-18T00:00:23.137398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6adfc079a3c1f7318ba2fa99b5e2c12f612a3b8cced19ee3e1b93efd57f378d

Aliases

arxiv: 1307.0670 · arxiv_version: 1307.0670v1 · doi: 10.48550/arxiv.1307.0670 · pith_short_12: W2W7YB42HQPX · pith_short_16: W2W7YB42HQPXGGF2 · pith_short_8: W2W7YB42

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/W2W7YB42HQPXGGF2F6UZWXRMCL \
  | 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: b6adfc079a3c1f7318ba2fa99b5e2c12f612a3b8cced19ee3e1b93efd57f378d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4fe9568fbb9b888575485dad35bd90cbc4945561cb82b0814b5e53ed156bd13",
    "cross_cats_sorted": [
      "q-bio.CB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.PS",
    "submitted_at": "2013-07-02T10:29:39Z",
    "title_canon_sha256": "8a5c61b5deca21b3ba5f8ec41b9d3ff665f3a204a80b3b872ed2cd020f489600"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.0670",
    "kind": "arxiv",
    "version": 1
  }
}