Pith Number

pith:3XRVR2CM

pith:1999:3XRVR2CMRKX4AUUSGOWQOR3KBP

not attested not anchored not stored refs pending

HI in Early-Type Galaxies

E.M. Sadler, R. Morganti, T. Oosterloo

arxiv:astro-ph/9902011 v1 · 1999-02-01 · 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{3XRVR2CMRKX4AUUSGOWQOR3KBP}

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	2026-05-18T01:40:13.417456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dde358e84c8aafc0529233ad07476a0bfa4b7f33cbe9a48bc54ff7535f263f07

Aliases

arxiv: astro-ph/9902011 · arxiv_version: astro-ph/9902011v1 · doi: 10.48550/arxiv.astro-ph/9902011 · pith_short_12: 3XRVR2CMRKX4 · pith_short_16: 3XRVR2CMRKX4AUUS · pith_short_8: 3XRVR2CM

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/3XRVR2CMRKX4AUUSGOWQOR3KBP \
  | 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: dde358e84c8aafc0529233ad07476a0bfa4b7f33cbe9a48bc54ff7535f263f07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e6d6809a0b03872c64f31280a77206ff1268f5b7c2e9253e06f95761b47c17c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-01T11:32:36Z",
    "title_canon_sha256": "c0f107f376cf7d251c9ac57a81e983d5ac79c4c73a87c30d59106a8cd75d6993"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902011",
    "kind": "arxiv",
    "version": 1
  }
}