Pith Number

pith:KHWSVZ4B

pith:2021:KHWSVZ4BOHWUOB7SNYAIZAHH4P

not attested not anchored not stored refs pending

The physical properties of $\gamma$-ray quiet flat-spectrum radio quasars: why are they undetected by $Fermi$-LAT?

Hu-Bing Xiao, Lei-Ming Du, Rui Xue, Shao-Qiang Xi, Xue-Jiao Deng, Ze-Rui Wang, Zhao-Hua Xie

arxiv:2107.08757 v1 · 2021-07-19 · 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{KHWSVZ4BOHWUOB7SNYAIZAHH4P}

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	2026-07-05T03:06:32.582937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51ed2ae78171ed4707f26e008c80e7e3e9a746d59012ef42a158410568b1fa71

Aliases

arxiv: 2107.08757 · arxiv_version: 2107.08757v1 · doi: 10.48550/arxiv.2107.08757 · pith_short_12: KHWSVZ4BOHWU · pith_short_16: KHWSVZ4BOHWUOB7S · pith_short_8: KHWSVZ4B

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/KHWSVZ4BOHWUOB7SNYAIZAHH4P \
  | 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: 51ed2ae78171ed4707f26e008c80e7e3e9a746d59012ef42a158410568b1fa71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2a5fb503015bbb993382933916295d7908c28952ec3893e04c639658c5e0dc9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-07-19T11:09:29Z",
    "title_canon_sha256": "33e74345d90f5ef1e1c74c774dc87cca6fb3d310229eda637642c2ccf4c38cae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.08757",
    "kind": "arxiv",
    "version": 1
  }
}