Pith Number

pith:EQM3S4FW

pith:1999:EQM3S4FWYW35PHGPMOQWCRW4YO

not attested not anchored not stored refs pending

The AGN/Normal Galaxy Connection : Summary

Andy Lawrence (IfA Edinburgh, ROE)

arxiv:astro-ph/9902291 v1 · 1999-02-19 · 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{EQM3S4FWYW35PHGPMOQWCRW4YO}

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	2026-07-04T16:10:43.677436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2419b970b6c5b7d79ccf63a16146dcc39522b78c1f206fbbcb98225b0b113a4a

Aliases

arxiv: astro-ph/9902291 · arxiv_version: astro-ph/9902291v1 · doi: 10.48550/arxiv.astro-ph/9902291 · pith_short_12: EQM3S4FWYW35 · pith_short_16: EQM3S4FWYW35PHGP · pith_short_8: EQM3S4FW

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/EQM3S4FWYW35PHGPMOQWCRW4YO \
  | 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: 2419b970b6c5b7d79ccf63a16146dcc39522b78c1f206fbbcb98225b0b113a4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9047c336a8100589ddd80243fd468d1326fb7b6e67847ae92005525e27752cc7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-19T19:18:25Z",
    "title_canon_sha256": "fb1d84b2ba74125209c01e856a47ebd3995e1676b8c06059afe340ee3ebf821e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902291",
    "kind": "arxiv",
    "version": 1
  }
}