Pith Number

pith:ICAUPCZU

pith:2012:ICAUPCZUNEL2ZQTKR4OUZ33NYM

not attested not anchored not stored refs pending

Optical Flux and Spectral Variability of Blazars

2), (2) DDU Gorakhpur University, (3) Institute of Astronomy, (4) Department of Physics, Alok C. Gupta (1, A. Strigachev (3), B. Mihov (3), Bulgaria, E. Semkov (3), G. Latev (3), Haritma Gaur (1, India, L. Slavcheva-Mihova (3), Nainital, NJ, Paul J. Wiita (4), R. Bachev (3), S. Boeva (3), Sofia, S. Peneva (3), USA), U. S. Pandey (2)((1) ARIES

arxiv:1207.5943 v1 · 2012-07-25 · 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{ICAUPCZUNEL2ZQTKR4OUZ33NYM}

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	2026-05-18T03:06:43.072042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4081478b346917acc26a8f1d4cef6dc314d2065068ad5241731c1ab1f71893cf

Aliases

arxiv: 1207.5943 · arxiv_version: 1207.5943v1 · doi: 10.48550/arxiv.1207.5943 · pith_short_12: ICAUPCZUNEL2 · pith_short_16: ICAUPCZUNEL2ZQTK · pith_short_8: ICAUPCZU

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/ICAUPCZUNEL2ZQTKR4OUZ33NYM \
  | 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: 4081478b346917acc26a8f1d4cef6dc314d2065068ad5241731c1ab1f71893cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "019f3b38fdd22bf112ee779105a97aa6462c20164dcd68346be4f0be78899a20",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-07-25T10:13:52Z",
    "title_canon_sha256": "ccac7175ad78487a83418a5447b8a51133bc2fd467363e82aabdd9284093fa2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.5943",
    "kind": "arxiv",
    "version": 1
  }
}