Pith Number

pith:F4EFJJIZ

pith:2019:F4EFJJIZW6UJBPEAL2SK7IV4SI

not attested not anchored not stored refs pending

Directly testing gravity with Proxima Centauri

Indranil Banik, Pavel Kroupa

arxiv:1906.08264 v1 · 2019-06-19 · astro-ph.SR · astro-ph.EP · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F4EFJJIZW6UJBPEAL2SK7IV4SI}

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	2026-05-17T23:42:52.911608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f0854a519b7a890bc805ea4afa2bc9238eeb9ef4da22ee3eba843427057ebad

Aliases

arxiv: 1906.08264 · arxiv_version: 1906.08264v1 · doi: 10.48550/arxiv.1906.08264 · pith_short_12: F4EFJJIZW6UJ · pith_short_16: F4EFJJIZW6UJBPEA · pith_short_8: F4EFJJIZ

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/F4EFJJIZW6UJBPEAL2SK7IV4SI \
  | 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: 2f0854a519b7a890bc805ea4afa2bc9238eeb9ef4da22ee3eba843427057ebad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b28aa44104d4cd60bccbd10262a4422a6c59410deaed9fc638e8a07872db37bd",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-06-19T18:00:00Z",
    "title_canon_sha256": "cdf8399b378e34ee147a7f482891f0aaa4c1cd39d2264dc938d08ffed7d5524e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08264",
    "kind": "arxiv",
    "version": 1
  }
}