Pith Number

pith:IWHPQU3V

pith:2013:IWHPQU3VPJIHN3NZ6FJ3RN2YEB

not attested not anchored not stored refs pending

Identification of New Gamma-Ray Blazar Candidates With Multifrequency Archival Observations

A. Paggi (SAO), F. Massaro (Stanford University), G. Tosti (University of Perugia), Howard A. Smith (SAO), JSI), Philip S. Cowperthwaite (University of Maryland, R. D'Abrusco (SAO)

arxiv:1308.1950 v1 · 2013-08-08 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IWHPQU3VPJIHN3NZ6FJ3RN2YEB}

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	2026-05-18T01:48:22.071202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

458ef853757a5076edb9f153b8b758205527949247c34284fdc95526f3b8013d

Aliases

arxiv: 1308.1950 · arxiv_version: 1308.1950v1 · doi: 10.48550/arxiv.1308.1950 · pith_short_12: IWHPQU3VPJIH · pith_short_16: IWHPQU3VPJIHN3NZ · pith_short_8: IWHPQU3V

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/IWHPQU3VPJIHN3NZ6FJ3RN2YEB \
  | 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: 458ef853757a5076edb9f153b8b758205527949247c34284fdc95526f3b8013d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cce1bb6fea5a49a68ab620e37a4990a728a0f046fbe55d3978ef06ed69b6144",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-08-08T20:00:00Z",
    "title_canon_sha256": "0bc45977389095e220cde3999d31bd8315dc4a979d950ed9287c4f3843544e93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.1950",
    "kind": "arxiv",
    "version": 1
  }
}