Pith Number

pith:7VE5RVLQ

pith:2019:7VE5RVLQPBYCECPO66XVGTO4Y4

not attested not anchored not stored refs pending

Measuring $H_0$ with pulsar timing arrays

Dom\`enec Espriu, Luciano Gabbanelli, Marc Rodoreda

arxiv:1908.08472 v2 · 2019-08-22 · gr-qc · astro-ph.CO · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7VE5RVLQPBYCECPO66XVGTO4Y4}

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	2026-07-05T00:55:17.801213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd49d8d57078702209eef7af534ddcc730de6be4895532d55236fdff80661996

Aliases

arxiv: 1908.08472 · arxiv_version: 1908.08472v2 · doi: 10.48550/arxiv.1908.08472 · pith_short_12: 7VE5RVLQPBYC · pith_short_16: 7VE5RVLQPBYCECPO · pith_short_8: 7VE5RVLQ

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/7VE5RVLQPBYCECPO66XVGTO4Y4 \
  | 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: fd49d8d57078702209eef7af534ddcc730de6be4895532d55236fdff80661996

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20c4858635609cc3cfdcdde1f6e57fbe82e1f3d58459252c8cf820cb44d262b8",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-08-22T16:09:19Z",
    "title_canon_sha256": "613b9a39a78c57622a396ba6d7aef53b0ee05343d8cf5052fb06004b1417fc6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08472",
    "kind": "arxiv",
    "version": 2
  }
}