Pith Number

pith:42NB2PIF

pith:2019:42NB2PIFYTOG6NVRBHCQRZIFLX

not attested not anchored not stored refs pending

Beyond the exoplanet mass-radius relation

J. Brinchmann, J.P. Faria, N.C. Santos, P. Figueira, S. Ulmer-Moll

arxiv:1909.07392 v1 · 2019-09-16 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{42NB2PIFYTOG6NVRBHCQRZIFLX}

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	2026-07-05T00:10:44.111225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e69a1d3d05c4dc6f36b109c508e5055dffaea6ec8b6fd4251895c1c896eb3f70

Aliases

arxiv: 1909.07392 · arxiv_version: 1909.07392v1 · doi: 10.48550/arxiv.1909.07392 · pith_short_12: 42NB2PIFYTOG · pith_short_16: 42NB2PIFYTOG6NVR · pith_short_8: 42NB2PIF

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/42NB2PIFYTOG6NVRBHCQRZIFLX \
  | 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: e69a1d3d05c4dc6f36b109c508e5055dffaea6ec8b6fd4251895c1c896eb3f70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75708b83e7596413fc02d925dda33b9f15bf6630deb76e429e06ea756357d484",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-09-16T18:00:01Z",
    "title_canon_sha256": "d4de112a69e6c319db324e99974bc969b0e760830ceee449b96ea3d3f0b276ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.07392",
    "kind": "arxiv",
    "version": 1
  }
}