Pith Number

pith:2CWODINL

pith:1999:2CWODINLCHWIVJFLH4XLSEAYQG

not attested not anchored not stored refs pending

X-ray Rapid Variability of MKN 421

A. Celotti, A. Treves, E. Pian, F. Tavecchio, G. Fossati, G. Ghisellini, G. Tagliaferri, L. Chiappetti, L. Maraschi, Y.H. Zhang

arxiv:astro-ph/9907416 v1 · 1999-07-29 · 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{2CWODINLCHWIVJFLH4XLSEAYQG}

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	2026-07-04T14:17:01.178637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0ace1a1ab11ec8aa4ab3f2eb91018818958b3052a723b0f90e02f1be801546d

Aliases

arxiv: astro-ph/9907416 · arxiv_version: astro-ph/9907416v1 · doi: 10.48550/arxiv.astro-ph/9907416 · pith_short_12: 2CWODINLCHWI · pith_short_16: 2CWODINLCHWIVJFL · pith_short_8: 2CWODINL

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/2CWODINLCHWIVJFLH4XLSEAYQG \
  | 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: d0ace1a1ab11ec8aa4ab3f2eb91018818958b3052a723b0f90e02f1be801546d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5ce8f4a65a392bb41e773086219434a6ed79e10eabe1db1fc9b96344786cc47",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-29T13:14:34Z",
    "title_canon_sha256": "814387f51d3fe3a4e6d54c045dd35aa6f39152b23f8861f517725073c8f387fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907416",
    "kind": "arxiv",
    "version": 1
  }
}