Pith Number

pith:QW4SHQ3A

pith:2006:QW4SHQ3A57MB5ZJ3UITQR7CBI2

not attested not anchored not stored refs pending

The unprecedented optical outburst of the quasar 3C 454.3. The WEBT campaign of 2004-2005

C. M. Raiteri, M. Villata, T. J. Balonek (for the WEBT Collaboration)

arxiv:astro-ph/0603386 v1 · 2006-03-15 · 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{QW4SHQ3A57MB5ZJ3UITQR7CBI2}

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	2026-07-04T23:54:16.525967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85b923c360efd81ee53ba22708fc4146b6eac8240d840eac4dd47bffd20650e9

Aliases

arxiv: astro-ph/0603386 · arxiv_version: astro-ph/0603386v1 · doi: 10.48550/arxiv.astro-ph/0603386 · pith_short_12: QW4SHQ3A57MB · pith_short_16: QW4SHQ3A57MB5ZJ3 · pith_short_8: QW4SHQ3A

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/QW4SHQ3A57MB5ZJ3UITQR7CBI2 \
  | 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: 85b923c360efd81ee53ba22708fc4146b6eac8240d840eac4dd47bffd20650e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66335feb5b9d7b6b7c551f9799757fc762100a9229c6d9dc8250d258e1a01999",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-03-15T10:36:10Z",
    "title_canon_sha256": "402d5a71ee9f22cef83a7bf56a57e83ec7035fa811b9b95bd96e6d6e4dbedbed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0603386",
    "kind": "arxiv",
    "version": 1
  }
}