Pith Number

pith:U7NB37F2

pith:2021:U7NB37F2ZAO42TCO7KLZ7JDMEJ

not attested not anchored not stored refs pending

Quasi-Periodic Oscillations in the long term radio light curves of the blazar AO 0235+164

Alok C. Gupta, Ashutosh Tripathi, Cosimo Bambi, Hugh Aller, Margo F. Aller, Minfeng Gu, Paul J. Wiita

arxiv:2101.02497 v1 · 2021-01-07 · 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{U7NB37F2ZAO42TCO7KLZ7JDMEJ}

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	2026-07-05T02:09:16.009506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7da1dfcbac81dcd4c4efa979fa46c22475282a54402b1630b60cc33a9546d5f

Aliases

arxiv: 2101.02497 · arxiv_version: 2101.02497v1 · doi: 10.48550/arxiv.2101.02497 · pith_short_12: U7NB37F2ZAO4 · pith_short_16: U7NB37F2ZAO42TCO · pith_short_8: U7NB37F2

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/U7NB37F2ZAO42TCO7KLZ7JDMEJ \
  | 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: a7da1dfcbac81dcd4c4efa979fa46c22475282a54402b1630b60cc33a9546d5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28b35a740ba1cd74528f29785500df61dde0d0bdb8a97bfa5b069aceeb671890",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-01-07T11:30:28Z",
    "title_canon_sha256": "4ccd6390f70ddcb2afd0a85c5ba0d3958ab5d6f2ed0aa71013108852179289da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.02497",
    "kind": "arxiv",
    "version": 1
  }
}