Pith Number

pith:GCXN62NP

pith:2002:GCXN62NPFN2BBW4DJ7NHG5QJXG

not attested not anchored not stored refs pending

Galactic Recycling: The HI Ring Around NGC 1533

(2) University of New South Wales), Emma Ryan-Weber (1), Kenji Bekki (2) ((1) University of Melbourne, Rachel Webster (1)

arxiv:astro-ph/0209321 v1 · 2002-09-17 · 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{GCXN62NPFN2BBW4DJ7NHG5QJXG}

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	2026-05-18T01:21:57.004268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30aedf69af2b7410db834fda737609b98797ed22f2637d41f2aa241d8c90f202

Aliases

arxiv: astro-ph/0209321 · arxiv_version: astro-ph/0209321v1 · doi: 10.48550/arxiv.astro-ph/0209321 · pith_short_12: GCXN62NPFN2B · pith_short_16: GCXN62NPFN2BBW4D · pith_short_8: GCXN62NP

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/GCXN62NPFN2BBW4DJ7NHG5QJXG \
  | 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: 30aedf69af2b7410db834fda737609b98797ed22f2637d41f2aa241d8c90f202

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae88e765a33a320c11ea0bb73de27ef8704eb808e68fdd7540cd6c1c7f487c8a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-17T07:53:30Z",
    "title_canon_sha256": "02390d6f981245da17eed5dfa2935146c53086f5aff903b94602f67a58961c1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209321",
    "kind": "arxiv",
    "version": 1
  }
}