Pith Number

pith:D7BZXHEX

pith:2018:D7BZXHEXNZOZ6KQUO4LGK54VHT

not attested not anchored not stored refs pending

Robust Limits on Photon Mass from Statistical Samples of Extragalactic Radio Pulsars

Jun-Jie Wei, Xue-Feng Wu

arxiv:1803.07298 v2 · 2018-03-20 · astro-ph.HE · astro-ph.CO · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D7BZXHEXNZOZ6KQUO4LGK54VHT}

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	2026-05-18T00:08:42.935460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fc39b9c976e5d9f2a1477166577953cfe48596d26d1fea27e7b225f5a27d1c2

Aliases

arxiv: 1803.07298 · arxiv_version: 1803.07298v2 · doi: 10.48550/arxiv.1803.07298 · pith_short_12: D7BZXHEXNZOZ · pith_short_16: D7BZXHEXNZOZ6KQU · pith_short_8: D7BZXHEX

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/D7BZXHEXNZOZ6KQUO4LGK54VHT \
  | 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: 1fc39b9c976e5d9f2a1477166577953cfe48596d26d1fea27e7b225f5a27d1c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77f0044560522f773f4c71d40d24d22f57ae8972b41b842938657ea1bf24cafd",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-03-20T08:43:30Z",
    "title_canon_sha256": "1a3aef7ee56609437c6bb6d611e59070dcc24f844669f38dbd3fdf4ac40c5710"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07298",
    "kind": "arxiv",
    "version": 2
  }
}