Pith Number

pith:D5Z2GETI

pith:1999:D5Z2GETIV6L2IKOE36ZZUS47DU

not attested not anchored not stored refs pending

HI in four star-forming low-luminosity E/S0 and S0 galaxies

E. Sadler, R. Morganti, T. Oosterloo

arxiv:astro-ph/9910181 v1 · 1999-10-11 · 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{D5Z2GETIV6L2IKOE36ZZUS47DU}

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	2026-05-18T01:07:35.961885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f73a31268af97a429c4dfb39a4b9f1d3e275b1c0a8ec94f85038c4a31682db2

Aliases

arxiv: astro-ph/9910181 · arxiv_version: astro-ph/9910181v1 · doi: 10.48550/arxiv.astro-ph/9910181 · pith_short_12: D5Z2GETIV6L2 · pith_short_16: D5Z2GETIV6L2IKOE · pith_short_8: D5Z2GETI

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/D5Z2GETIV6L2IKOE36ZZUS47DU \
  | 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: 1f73a31268af97a429c4dfb39a4b9f1d3e275b1c0a8ec94f85038c4a31682db2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "117d90b6600360bfdc6a76efbe488b67e3d61aa2163d34d96b5435bb6dd3983c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-10-11T07:46:06Z",
    "title_canon_sha256": "011d91d942bee77dd8379cc40d21ef5d96f134b4d4176db1b13fd6b6453a09b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9910181",
    "kind": "arxiv",
    "version": 1
  }
}