Pith Number

pith:RPONN233

pith:2013:RPONN233LMFTP5FXGPOG3WZYNX

not attested not anchored not stored refs pending

ESO VLT Optical Spectroscopy of BL Lac Objects IV. New spectra and properties of the full sample

Aldo Treves, Boris Sbarufatti, Jari Kotilainen, Marco Landoni, Martina Barattini, Renato Falomo, Roberto Decarli

arxiv:1302.2591 v1 · 2013-02-11 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RPONN233LMFTP5FXGPOG3WZYNX}

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	2026-05-18T01:51:42.575568Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bdcd6eb7b5b0b37f4b733dc6ddb386de9d54914c0d83bc7a05957a314225a76

Aliases

arxiv: 1302.2591 · arxiv_version: 1302.2591v1 · doi: 10.48550/arxiv.1302.2591 · pith_short_12: RPONN233LMFT · pith_short_16: RPONN233LMFTP5FX · pith_short_8: RPONN233

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/RPONN233LMFTP5FXGPOG3WZYNX \
  | 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: 8bdcd6eb7b5b0b37f4b733dc6ddb386de9d54914c0d83bc7a05957a314225a76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9c52d1b6d9f6a8425d97a3a56a88a51516b746c6bb07bb48dea63649b3ce0f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-11T19:50:10Z",
    "title_canon_sha256": "e9a9aedffd80bc97996c86308f8bfc2a48dbf7c3fae9adfc3f9800ecb5072083"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2591",
    "kind": "arxiv",
    "version": 1
  }
}