Pith Number

pith:XFUL7YCW

pith:1996:XFUL7YCWPE2BNHCEMD7EUKYGXR

not attested not anchored not stored refs pending

A powerful and highly variable off-nuclear X-ray source in the composite starburst/Seyfert 2 galaxy NGC 4945

C.S. Reynolds, K. Iwasawa, W.N. Brandt

arxiv:astro-ph/9607007 v1 · 1996-07-02 · 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{XFUL7YCWPE2BNHCEMD7EUKYGXR}

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	2026-05-18T01:12:43.985835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b968bfe0567934169c4460fe4a2b06bc5749abcd09a568f30ed279b1b8a19926

Aliases

arxiv: astro-ph/9607007 · arxiv_version: astro-ph/9607007v1 · doi: 10.48550/arxiv.astro-ph/9607007 · pith_short_12: XFUL7YCWPE2B · pith_short_16: XFUL7YCWPE2BNHCE · pith_short_8: XFUL7YCW

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/XFUL7YCWPE2BNHCEMD7EUKYGXR \
  | 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: b968bfe0567934169c4460fe4a2b06bc5749abcd09a568f30ed279b1b8a19926

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b85953e44cabb528382d624c22a2ce4b6361170d6bfe4ac4618c72e0555153d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-07-02T11:33:28Z",
    "title_canon_sha256": "fff1026a455ec572451b55df23b92ce19e8707b3602c9ddc7ccbd8c664b8942d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9607007",
    "kind": "arxiv",
    "version": 1
  }
}