Pith Number

pith:W54QDPDP

pith:2018:W54QDPDPNQ56BDZL3TZZQ4A7GH

not attested not anchored not stored refs pending

A state-space approach to sparse dynamic network reconstruction

Johan Thunberg, Jorge Goncalves, Lennart Ljung, Zuogong Yue

arxiv:1811.08677 v1 · 2018-11-21 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W54QDPDPNQ56BDZL3TZZQ4A7GH}

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	2026-05-18T00:00:11.913037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b77901bc6f6c3be08f2bdcf398701f31c8d106bea33bf8fd466dced645238b9f

Aliases

arxiv: 1811.08677 · arxiv_version: 1811.08677v1 · doi: 10.48550/arxiv.1811.08677 · pith_short_12: W54QDPDPNQ56 · pith_short_16: W54QDPDPNQ56BDZL · pith_short_8: W54QDPDP

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/W54QDPDPNQ56BDZL3TZZQ4A7GH \
  | 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: b77901bc6f6c3be08f2bdcf398701f31c8d106bea33bf8fd466dced645238b9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "694cef3e016a393ad66568c3887d18185c2c99dc030ce48d156d6f355046f69e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2018-11-21T10:52:57Z",
    "title_canon_sha256": "de1c5fd3925902f8c7f358086b72f14dde2ba840885feb44376af8626fce85b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.08677",
    "kind": "arxiv",
    "version": 1
  }
}