Pith Number

pith:4IBUJ4FU

pith:1997:4IBUJ4FUZM44IUPH4KUVU2S7FH

not attested not anchored not stored refs pending

Ultraviolet Emission from the LINER Nucleus of NGC 6500

A. J. Barth, A. V. Filippenko, E. M. Puchnarewicz, G. A. Reichert, J. C. Shields, L. C. Ho

arxiv:astro-ph/9709034 v1 · 1997-09-04 · 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{4IBUJ4FUZM44IUPH4KUVU2S7FH}

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	2026-07-04T16:03:13.255389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e20344f0b4cb39c451e7e2a95a6a5f29fb17884633e3e8e2b060da5c3dce05e0

Aliases

arxiv: astro-ph/9709034 · arxiv_version: astro-ph/9709034v1 · doi: 10.48550/arxiv.astro-ph/9709034 · pith_short_12: 4IBUJ4FUZM44 · pith_short_16: 4IBUJ4FUZM44IUPH · pith_short_8: 4IBUJ4FU

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/4IBUJ4FUZM44IUPH4KUVU2S7FH \
  | 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: e20344f0b4cb39c451e7e2a95a6a5f29fb17884633e3e8e2b060da5c3dce05e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84b52e81161e78a27ac12211e0f7928045ad5a63024db25384c1608bec3392c8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-09-04T00:58:00Z",
    "title_canon_sha256": "8bdb882d57bcaca4f4a249ba5446031a8ead157ef129f562dd96180eabd59210"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9709034",
    "kind": "arxiv",
    "version": 1
  }
}