Pith Number

pith:YQ2AHUDN

pith:1998:YQ2AHUDNR4PF7V37WCOJW3BGCW

not attested not anchored not stored refs pending

Star Formation in Southern Seyfert Galaxies

Duncan Forbes (University of Birmingham), Ray Norris (Australia Telescope National Facility)

arxiv:astro-ph/9804298 v1 · 1998-04-28 · 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{YQ2AHUDNR4PF7V37WCOJW3BGCW}

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	2026-05-18T01:40:14.176853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c43403d06d8f1e5fd77fb09c9b6c2615ad101ffb10b886c934cda9e4d52f5db6

Aliases

arxiv: astro-ph/9804298 · arxiv_version: astro-ph/9804298v1 · doi: 10.48550/arxiv.astro-ph/9804298 · pith_short_12: YQ2AHUDNR4PF · pith_short_16: YQ2AHUDNR4PF7V37 · pith_short_8: YQ2AHUDN

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/YQ2AHUDNR4PF7V37WCOJW3BGCW \
  | 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: c43403d06d8f1e5fd77fb09c9b6c2615ad101ffb10b886c934cda9e4d52f5db6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27b9a46ba4755a9a2e9787edad913c4642565fd2412748ed289bd7de21a6db72",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-04-28T13:11:08Z",
    "title_canon_sha256": "dcdc74560ac742799629275986d396c021f8d81c697785409b95d16595abbbd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9804298",
    "kind": "arxiv",
    "version": 1
  }
}