Pith Number

pith:FOOEKNIR

pith:2018:FOOEKNIRFLJ3KWWIKMPYXD56TK

not attested not anchored not stored refs pending

Detection of a quasi-periodic oscillation in gamma-ray light curve of the high redshift blazar B2 1520+31

Alok C. Gupta, Ashutosh Tripathi, Cosimo Bambi, Pankaj Kushwaha, Paul J. Wiita, Zhongli Zhang

arxiv:1810.12607 v1 · 2018-10-30 · 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{FOOEKNIRFLJ3KWWIKMPYXD56TK}

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	2026-05-17T23:52:40.218701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b9c4535112ad3b55ac8531f8b8fbe9a8f1a05dbd2280da6c55ee336c9c79d26

Aliases

arxiv: 1810.12607 · arxiv_version: 1810.12607v1 · doi: 10.48550/arxiv.1810.12607 · pith_short_12: FOOEKNIRFLJ3 · pith_short_16: FOOEKNIRFLJ3KWWI · pith_short_8: FOOEKNIR

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/FOOEKNIRFLJ3KWWIKMPYXD56TK \
  | 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: 2b9c4535112ad3b55ac8531f8b8fbe9a8f1a05dbd2280da6c55ee336c9c79d26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f25869909f4c8eecf9924880c63332cf1855ef267c5186be3858f6f51942d212",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-10-30T09:41:46Z",
    "title_canon_sha256": "c377bf3a105567b020c70f6c0321592b2a070e84fb5b3a6e7aa99555f0278709"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.12607",
    "kind": "arxiv",
    "version": 1
  }
}