Pith Number

pith:FQAN35RL

pith:2015:FQAN35RLWAP3KBYB3VSQA2Z6KG

not attested not anchored not stored refs pending

A hard gamma-ray flare from 3C 279 in 2013 December

Chris Diltz, C. S. Stalin, David Buckley, Markus Bottcher, Vaidehi S. Paliya

arxiv:1512.00203 v1 · 2015-12-01 · 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{FQAN35RLWAP3KBYB3VSQA2Z6KG}

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	2026-05-18T01:22:00.252713Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c00ddf62bb01fb50701dd65006b3e51b317eeca0e36f59ecf6a82a0577c5dec

Aliases

arxiv: 1512.00203 · arxiv_version: 1512.00203v1 · doi: 10.48550/arxiv.1512.00203 · pith_short_12: FQAN35RLWAP3 · pith_short_16: FQAN35RLWAP3KBYB · pith_short_8: FQAN35RL

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/FQAN35RLWAP3KBYB3VSQA2Z6KG \
  | 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: 2c00ddf62bb01fb50701dd65006b3e51b317eeca0e36f59ecf6a82a0577c5dec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef81b64fc09be7b89ce6aae1ebfe6dfa64e297563810b313e34c64d3604f7694",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-12-01T10:11:53Z",
    "title_canon_sha256": "bdee92dfee252983f1282cd8529800997d85827a7227dfdf5832b313e0310185"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00203",
    "kind": "arxiv",
    "version": 1
  }
}