Pith Number

pith:S53RPDX2

pith:2018:S53RPDX2JYWALEUS7AA2ZT5B57

not attested not anchored not stored refs pending

Shape Analysis of HII Regions - I. Statistical Clustering

Alfred Kume, Dirk Froebrich, Justyn Campbell-White

arxiv:1804.04937 v1 · 2018-04-13 · astro-ph.GA · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S53RPDX2JYWALEUS7AA2ZT5B57}

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	2026-05-18T00:17:03.276820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9777178efa4e2c059292f801accfa1efc2821f3b43416f854e242b46a14444f2

Aliases

arxiv: 1804.04937 · arxiv_version: 1804.04937v1 · doi: 10.48550/arxiv.1804.04937 · pith_short_12: S53RPDX2JYWA · pith_short_16: S53RPDX2JYWALEUS · pith_short_8: S53RPDX2

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/S53RPDX2JYWALEUS7AA2ZT5B57 \
  | 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: 9777178efa4e2c059292f801accfa1efc2821f3b43416f854e242b46a14444f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62b5cbc6f1597c1ec1f5855f9e1ec82e5b31b3a2fae3c3d499f4f9ff17b3a924",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-04-13T13:41:59Z",
    "title_canon_sha256": "b8958247c1cd8af83d1788b1a63f1416f98aa73a18c7f65d8a3049928ea1d5fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04937",
    "kind": "arxiv",
    "version": 1
  }
}