Pith Number

pith:2QBHVS4J

pith:2002:2QBHVS4JS6NNX3PKUDAQNJVY2C

not attested not anchored not stored refs pending

X-rays from the jet in 3C 273: clues from the radio-optical spectra

H.-J. Roeser, K. Meisenheimer, R. Perley, S. Jester

arxiv:astro-ph/0202428 v1 · 2002-02-22 · 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{2QBHVS4JS6NNX3PKUDAQNJVY2C}

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	2026-07-04T16:29:27.233362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4027acb89979adbedeaa0c106a6b8d0aa364e17e6830601798d503fb5efa6df

Aliases

arxiv: astro-ph/0202428 · arxiv_version: astro-ph/0202428v1 · doi: 10.48550/arxiv.astro-ph/0202428 · pith_short_12: 2QBHVS4JS6NN · pith_short_16: 2QBHVS4JS6NNX3PK · pith_short_8: 2QBHVS4J

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/2QBHVS4JS6NNX3PKUDAQNJVY2C \
  | 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: d4027acb89979adbedeaa0c106a6b8d0aa364e17e6830601798d503fb5efa6df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c2c9c7024b387ca002c95afa16e07ac314d4b20c28d6c5169e3909f7981e423",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-22T16:51:35Z",
    "title_canon_sha256": "dc7a7180bd5b64f7bd651e4fbd8f405ec0c0c7b15bb9ae4236ad7d31cbc28fc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202428",
    "kind": "arxiv",
    "version": 1
  }
}