Pith Number

pith:GQGJBJWV

pith:2000:GQGJBJWVTUM4UHGAHN2BJ6ITE4

not attested not anchored not stored refs pending

Two BeppoSAX observations of BL Lac

A. Celotti, A. Treves, A. Wolter, C.M. Raiteri, E. Massaro, F. Tavecchio, G. Ghisellini, G. Tagliaferri, G. Tosti, L. Chiappetti, L. Costamante, L. Maraschi, M. Chiaberge, M. Ravasio, M. Villata, P. Giommi, R. Nesci

arxiv:astro-ph/0007107 v1 · 2000-07-08 · 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{GQGJBJWVTUM4UHGAHN2BJ6ITE4}

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	2026-07-04T14:10:29.261027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

340c90a6d59d19ca1cc03b7414f9132716b29f4c1d549de83242ecfec99d2c05

Aliases

arxiv: astro-ph/0007107 · arxiv_version: astro-ph/0007107v1 · doi: 10.48550/arxiv.astro-ph/0007107 · pith_short_12: GQGJBJWVTUM4 · pith_short_16: GQGJBJWVTUM4UHGA · pith_short_8: GQGJBJWV

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/GQGJBJWVTUM4UHGAHN2BJ6ITE4 \
  | 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: 340c90a6d59d19ca1cc03b7414f9132716b29f4c1d549de83242ecfec99d2c05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdb8d4e23843bf6ce350f399e30b7c75b39ad3e9f4a097a2fac53e11d0464225",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-07-08T15:21:02Z",
    "title_canon_sha256": "187acc252e8b3f496d946086ffbd06239b3573a6a4506f9d98f6d719a41e0522"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0007107",
    "kind": "arxiv",
    "version": 1
  }
}