Pith Number

pith:M2JGAPOK

pith:1998:M2JGAPOKEHXEKZ2SLHY4BDRLIP

not attested not anchored not stored refs pending

A Hidden Broad-Line Region in the Weak Seyfert 2 Galaxy NGC 788

Berkeley), Columbia University), Edward C. Moran (University of California, Laura E. Kay (Barnard College

arxiv:astro-ph/9807248 v1 · 1998-07-23 · 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{M2JGAPOKEHXEKZ2SLHY4BDRLIP}

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	2026-05-18T01:40:13.860860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6692603dca21ee45675259f1c08e2b43d382d872da1dfadd764e42167abf5f99

Aliases

arxiv: astro-ph/9807248 · arxiv_version: astro-ph/9807248v1 · doi: 10.48550/arxiv.astro-ph/9807248 · pith_short_12: M2JGAPOKEHXE · pith_short_16: M2JGAPOKEHXEKZ2S · pith_short_8: M2JGAPOK

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/M2JGAPOKEHXEKZ2SLHY4BDRLIP \
  | 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: 6692603dca21ee45675259f1c08e2b43d382d872da1dfadd764e42167abf5f99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22b31e857e24f648c1cb991af5d5236a6405581451d796d39fb114daec932152",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-23T22:57:46Z",
    "title_canon_sha256": "15eb9ebde2ee536b67d84fb3afa5b0a0b14a3349e17410f82f60824746f6ed17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807248",
    "kind": "arxiv",
    "version": 1
  }
}