Pith Number

pith:JJBWVUJS

pith:1998:JJBWVUJSIT5LPI3FV77GVWEITM

not attested not anchored not stored refs pending

Bars within Bars in Galaxies

2), (2) MPIA Heidelberg), Linda S. Sparke (1) ((1) University of Wisconsin, Witold Maciejewski(1

arxiv:astro-ph/9812228 v1 · 1998-12-11 · 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{JJBWVUJSIT5LPI3FV77GVWEITM}

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	2026-07-04T14:16:25.973835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a436ad13244fab7a365affe6ad8889b2c08fdecc0a9bc8c33d94f2f06c4118e

Aliases

arxiv: astro-ph/9812228 · arxiv_version: astro-ph/9812228v1 · doi: 10.48550/arxiv.astro-ph/9812228 · pith_short_12: JJBWVUJSIT5L · pith_short_16: JJBWVUJSIT5LPI3F · pith_short_8: JJBWVUJS

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/JJBWVUJSIT5LPI3FV77GVWEITM \
  | 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: 4a436ad13244fab7a365affe6ad8889b2c08fdecc0a9bc8c33d94f2f06c4118e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4d47109498d0231bbc5a8e431455e6ac2ac41bc528e90bfe9bbf9841a0a7a85",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-11T15:31:45Z",
    "title_canon_sha256": "24c62ff622e539c7a765eaef247fad2dde3952e613a610a35101a6d41caed1d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812228",
    "kind": "arxiv",
    "version": 1
  }
}