Pith Number

pith:2AF23SQQ

pith:2001:2AF23SQQUMQ3XZKCEXMA3NFTBD

not attested not anchored not stored refs pending

On the Nature of the NGC 1275 System

Christopher J. Conselice, John S. Gallagher, Rosemary F.G. Wyse

arxiv:astro-ph/0108019 v1 · 2001-08-01 · 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{2AF23SQQUMQ3XZKCEXMA3NFTBD}

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.

Cited by

1 paper in Pith

X-ray Flaring and Variability in NGC 1275, the Heart of the Perseus Cluster

Receipt and verification

First computed	2026-07-04T16:23:48.451984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d00badca10a321bbe54225d80db4b308c46b616b6f85159f8f79223b3d4115a2

Aliases

arxiv: astro-ph/0108019 · arxiv_version: astro-ph/0108019v1 · doi: 10.48550/arxiv.astro-ph/0108019 · pith_short_12: 2AF23SQQUMQ3 · pith_short_16: 2AF23SQQUMQ3XZKC · pith_short_8: 2AF23SQQ

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/2AF23SQQUMQ3XZKCEXMA3NFTBD \
  | 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: d00badca10a321bbe54225d80db4b308c46b616b6f85159f8f79223b3d4115a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab4fabc5ee0e57a3c1aed4e3b956a3c0ac7fff1d4200a41acbcf6ae3e9a903f6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-01T17:15:30Z",
    "title_canon_sha256": "9c083070a45cf1545019525ac59a097c0f79652f2beb8562614dd69648b522a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108019",
    "kind": "arxiv",
    "version": 1
  }
}