Pith Number

pith:SBV5DE5X

pith:1999:SBV5DE5X2V5YPOQYSY7RJMS43R

not attested not anchored not stored refs pending

HST observations of nearby radio-loud early-type galaxies

2), (2) STScI, Baltimore), C.P. O'Dea (2) ((1) Leiden Observatory, G.A. Verdoes Kleijn (1, P.T. de Zeeuw (1), S.A. Baum (2)

arxiv:astro-ph/9909256 v1 · 1999-09-15 · 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{SBV5DE5X2V5YPOQYSY7RJMS43R}

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	2026-07-04T16:11:36.637279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

906bd193b7d57b87ba18963f14b25cdc7f843d8f822fc38499e6cef431ca183c

Aliases

arxiv: astro-ph/9909256 · arxiv_version: astro-ph/9909256v1 · doi: 10.48550/arxiv.astro-ph/9909256 · pith_short_12: SBV5DE5X2V5Y · pith_short_16: SBV5DE5X2V5YPOQY · pith_short_8: SBV5DE5X

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/SBV5DE5X2V5YPOQYSY7RJMS43R \
  | 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: 906bd193b7d57b87ba18963f14b25cdc7f843d8f822fc38499e6cef431ca183c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8383ce76618f0151526575358b7570862c45a50487b700a4961aefea48bf002c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-09-15T13:35:18Z",
    "title_canon_sha256": "4e53612d224c3619d9d8eb71a5007989ac5eae35c03d30ea63c77e228fc547d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9909256",
    "kind": "arxiv",
    "version": 1
  }
}