Pith Number

pith:RXA6SBRX

pith:1998:RXA6SBRX64BEQEHDVRQMUBDDAL

not attested not anchored not stored refs pending

Physical Conditions in the Seyfert Galaxy NGC 2992

Mark G. Allen, Michael A. Dopita, Ralph S. Sutherland, Zlatan I. Tsvetanov

arxiv:astro-ph/9809123 v1 · 1998-09-10 · 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{RXA6SBRX64BEQEHDVRQMUBDDAL}

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	2026-07-04T16:07:00.454166Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dc1e90637f7024810e3ac60ca046302ce8e0f0195935d3dd1533343836999af

Aliases

arxiv: astro-ph/9809123 · arxiv_version: astro-ph/9809123v1 · doi: 10.48550/arxiv.astro-ph/9809123 · pith_short_12: RXA6SBRX64BE · pith_short_16: RXA6SBRX64BEQEHD · pith_short_8: RXA6SBRX

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/RXA6SBRX64BEQEHDVRQMUBDDAL \
  | 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: 8dc1e90637f7024810e3ac60ca046302ce8e0f0195935d3dd1533343836999af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3961b83fb4283cf4a74be68b037535e8f8b46a4036fd0259d2054482a818d7d0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-10T04:17:49Z",
    "title_canon_sha256": "6a96b9564b5b5ac52904aff65cd0d11edba7393e64f0e20737f7daf45dcdc3bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809123",
    "kind": "arxiv",
    "version": 1
  }
}