Pith Number

pith:4NCW65XZ

pith:2013:4NCW65XZU5MPCCEYSZMVG3I5IN

not attested not anchored not stored refs pending

Spectroscopy of Optically Selected BL Lac Objects and their gamma-ray emission

A. Sandrinelli, A. Treves, B. Sbarufatti, E. P. Farina, L. Foschini, M. Landoni, R. Falomo

arxiv:1310.1837 v1 · 2013-10-07 · 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{4NCW65XZU5MPCCEYSZMVG3I5IN}

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	2026-05-18T01:47:14.392021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3456f76f9a758f108989659536d1d435211586b6e55145a909340b50258914b

Aliases

arxiv: 1310.1837 · arxiv_version: 1310.1837v1 · doi: 10.48550/arxiv.1310.1837 · pith_short_12: 4NCW65XZU5MP · pith_short_16: 4NCW65XZU5MPCCEY · pith_short_8: 4NCW65XZ

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/4NCW65XZU5MPCCEYSZMVG3I5IN \
  | 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: e3456f76f9a758f108989659536d1d435211586b6e55145a909340b50258914b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6648d36f96bf26eec9471ac2dffe917438a192cfb5fd95d72070209be3f7e595",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-07T15:58:54Z",
    "title_canon_sha256": "85688c3fc1befe09bd470fe41590aae6a3e64433226f4fbfecd4df70389a94f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1837",
    "kind": "arxiv",
    "version": 1
  }
}