Pith Number

pith:QMGPKDFM

pith:2019:QMGPKDFM7XLVQBRPDQRXNRFWOI

not attested not anchored not stored refs pending

Network constraints in scale free dynamical systems

Erik D. Fagerholm, Fritjof Helmchen, Karl J. Friston, Robert Leech, Rosalyn J. Moran, W.M.C. Foulkes, Yasir Gallero-Salas

arxiv:1908.06678 v1 · 2019-08-19 · physics.bio-ph · q-bio.NC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QMGPKDFM7XLVQBRPDQRXNRFWOI}

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	2026-07-04T23:58:18.437731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

830cf50cacfdd758062f1c2376c4b67237504e16fe0a8dfa2247dc71a60a6cff

Aliases

arxiv: 1908.06678 · arxiv_version: 1908.06678v1 · doi: 10.48550/arxiv.1908.06678 · pith_short_12: QMGPKDFM7XLV · pith_short_16: QMGPKDFM7XLVQBRP · pith_short_8: QMGPKDFM

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/QMGPKDFM7XLVQBRPDQRXNRFWOI \
  | 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: 830cf50cacfdd758062f1c2376c4b67237504e16fe0a8dfa2247dc71a60a6cff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15698aed06b05efd6b4b97598ac02358a6c6fc9bc97491a968d8a57ddab5c528",
    "cross_cats_sorted": [
      "q-bio.NC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2019-08-19T10:09:54Z",
    "title_canon_sha256": "e7153c7ad8aa718cc8879684abc89c519d7139b60bddf30ba8136d9f2aad7084"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06678",
    "kind": "arxiv",
    "version": 1
  }
}