Pith Number

pith:NCKATWIC

pith:1998:NCKATWICCOPI5L43RLL7UQAJCV

not attested not anchored not stored refs pending

Fast X-ray Variability of PKS 2155-304: A Cross Correlation Analysis

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

arxiv:astro-ph/9811244 v1 · 1998-11-16 · 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{NCKATWICCOPI5L43RLL7UQAJCV}

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	2026-07-04T14:16:19.756440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

689409d902139e8eaf9b8ad7fa40091543d5e4b73f43a5186e579c95eb9929cd

Aliases

arxiv: astro-ph/9811244 · arxiv_version: astro-ph/9811244v1 · doi: 10.48550/arxiv.astro-ph/9811244 · pith_short_12: NCKATWICCOPI · pith_short_16: NCKATWICCOPI5L43 · pith_short_8: NCKATWIC

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/NCKATWICCOPI5L43RLL7UQAJCV \
  | 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: 689409d902139e8eaf9b8ad7fa40091543d5e4b73f43a5186e579c95eb9929cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3fa0128264006586d4dad50afc3b979e24f7fd00f4bd5759a95ed39102b4d90",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-11-16T11:47:54Z",
    "title_canon_sha256": "04050b379a7ab65aa755dcc5d61a89e1ef2ddc9357ef65a72169a3377d6379a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9811244",
    "kind": "arxiv",
    "version": 1
  }
}