Pith Number

pith:XAM7AF5Y

pith:1998:XAM7AF5YZBMKWOEUMG5GJJHIHQ

not attested not anchored not stored refs pending

ROSAT observations of the Sculptor galaxy NGC7793

A. M. Read, Garching), W. Pietsch (MPE

arxiv:astro-ph/9810013 v1 · 1998-10-01 · 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{XAM7AF5YZBMKWOEUMG5GJJHIHQ}

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	2026-07-04T14:16:04.352203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b819f017b8c858ab389461ba64a4e83c0dfcd1be4bf27d2d919a7e8d384e1848

Aliases

arxiv: astro-ph/9810013 · arxiv_version: astro-ph/9810013v1 · doi: 10.48550/arxiv.astro-ph/9810013 · pith_short_12: XAM7AF5YZBMK · pith_short_16: XAM7AF5YZBMKWOEU · pith_short_8: XAM7AF5Y

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/XAM7AF5YZBMKWOEUMG5GJJHIHQ \
  | 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: b819f017b8c858ab389461ba64a4e83c0dfcd1be4bf27d2d919a7e8d384e1848

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fb9a569d54bdf412b066c07ae0a5201db75509031c988d454179c297d0fa4da",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-10-01T14:38:03Z",
    "title_canon_sha256": "42f3901b24c7429c2f1780c3ed9a8528c74e66fbbf0035e1b82e82c1fbe5bfe5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9810013",
    "kind": "arxiv",
    "version": 1
  }
}