Pith Number

pith:7FENUJEC

pith:2020:7FENUJECG5I77BNUYD6DT3UNCJ

not attested not anchored not stored refs pending

A New Method to Measure Hubble Parameter $H(z)$ using Fast Radio Bursts

F. Y. Wang (NJU), Hai Yu, Q. Wu

arxiv:2004.12649 v1 · 2020-04-27 · astro-ph.CO · 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{7FENUJECG5I77BNUYD6DT3UNCJ}

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.

Cited by

1 paper in Pith

Gravitational particle production, the cosmological tensions and fast radio bursts

Receipt and verification

First computed	2026-07-05T01:05:48.705617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f948da24823751ff85b4c0fc39ee8d1257b54a56a41d716f2b5b2a1c65c96bd8

Aliases

arxiv: 2004.12649 · arxiv_version: 2004.12649v1 · doi: 10.48550/arxiv.2004.12649 · pith_short_12: 7FENUJECG5I7 · pith_short_16: 7FENUJECG5I77BNU · pith_short_8: 7FENUJEC

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/7FENUJECG5I77BNUYD6DT3UNCJ \
  | 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: f948da24823751ff85b4c0fc39ee8d1257b54a56a41d716f2b5b2a1c65c96bd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ae1c84168695c0dea5f9fa7c24f9f7c39bfe60b5054f1c6aab103d7499cae72",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-04-27T08:52:24Z",
    "title_canon_sha256": "eab2f9bbb42238b7224bb6b06edde65850858252b2564d14d4e0f5446a17afaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.12649",
    "kind": "arxiv",
    "version": 1
  }
}