Pith Number

pith:4K4CAYNK

pith:2015:4K4CAYNKZECL7MTK6ESPBZOEQE

not attested not anchored not stored refs pending

Nature of Intra-night Optical Variability of BL Lacertae

Alok C. Gupta, A. Rajasingam, A.Strigachev, B. Mihov, E. Semkov, Haritma Gaur, H. Guo, J. A. de Diego, L. Slavcheva-Mihova, M. Bottcher, Minfeng Gu, N. Palma, Paul J. Wiita, R. Bachev, R. Joshi, S. Peneva

arxiv:1508.00953 v1 · 2015-08-05 · 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{4K4CAYNKZECL7MTK6ESPBZOEQE}

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	2026-05-18T01:35:06.490063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2b82061aac904bfb26af124f0e5c4812d0d4b93509188193d9c6075cf434c22

Aliases

arxiv: 1508.00953 · arxiv_version: 1508.00953v1 · doi: 10.48550/arxiv.1508.00953 · pith_short_12: 4K4CAYNKZECL · pith_short_16: 4K4CAYNKZECL7MTK · pith_short_8: 4K4CAYNK

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/4K4CAYNKZECL7MTK6ESPBZOEQE \
  | 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: e2b82061aac904bfb26af124f0e5c4812d0d4b93509188193d9c6075cf434c22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ac2a02439c027aca2d7dfe2a89b2ba78a2eb83b66010f8977923b2ab90d985c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-08-05T02:00:29Z",
    "title_canon_sha256": "cc2a75a30ba838e8d992682e58bafbb922e756b756b1a343bad771091bb7e88e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00953",
    "kind": "arxiv",
    "version": 1
  }
}