Pith Number

pith:LKNC2INU

pith:1998:LKNC2INU6JNF22J73VWSN22MDY

not attested not anchored not stored refs pending

Dynamical Evolution and Ionization Structure of an Expanding Superbubble: Application to W4

Doug Johnstone, P. G. Martin (CITA), Shantanu Basu

arxiv:astro-ph/9812283 v1 · 1998-12-15 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LKNC2INU6JNF22J73VWSN22MDY}

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	2026-07-04T16:07:22.465050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a9a2d21b4f25a5d693fdd6d26eb4c1e3ee34b5cce6afba88ca6d4f69c1d84ff

Aliases

arxiv: astro-ph/9812283 · arxiv_version: astro-ph/9812283v1 · doi: 10.48550/arxiv.astro-ph/9812283 · pith_short_12: LKNC2INU6JNF · pith_short_16: LKNC2INU6JNF22J7 · pith_short_8: LKNC2INU

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/LKNC2INU6JNF22J73VWSN22MDY \
  | 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: 5a9a2d21b4f25a5d693fdd6d26eb4c1e3ee34b5cce6afba88ca6d4f69c1d84ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02efd57f251443fe2e833249e413d626630c01927b81fc2365fcc438cb245794",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-15T18:53:34Z",
    "title_canon_sha256": "c6d59108b7f726fa61f219ad29810c2e65e24aa008678609dc75d5ca7478dbbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812283",
    "kind": "arxiv",
    "version": 1
  }
}