Pith Number

pith:KL3HB5RO

pith:2013:KL3HB5ROYBVFBUDVABSGZ4ZSYZ

not attested not anchored not stored refs pending

Anti-correlated Optical Flux and Polarization Variability in BL Lac

Alok C. Gupta, Haritma Gaur, Mahito Sasada, Makoto Uemura, Paul J. Wiita, Ryosuke Itoh

arxiv:1312.0939 v1 · 2013-12-03 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KL3HB5ROYBVFBUDVABSGZ4ZSYZ}

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	2026-05-18T01:45:59.054966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52f670f62ec06a50d07500646cf332c667e120b4b7838a4cffae120594e8524b

Aliases

arxiv: 1312.0939 · arxiv_version: 1312.0939v1 · doi: 10.48550/arxiv.1312.0939 · pith_short_12: KL3HB5ROYBVF · pith_short_16: KL3HB5ROYBVFBUDV · pith_short_8: KL3HB5RO

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/KL3HB5ROYBVFBUDVABSGZ4ZSYZ \
  | 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: 52f670f62ec06a50d07500646cf332c667e120b4b7838a4cffae120594e8524b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88128328e134d9a11013e8cc2b4bbcc983814e4ae911a4e6aaef567c2411fca8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-12-03T05:36:17Z",
    "title_canon_sha256": "e2e3bda8c987272e5baf9748016e8943bc5df9d3c7cde94a440cd6528ce43310"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.0939",
    "kind": "arxiv",
    "version": 1
  }
}