Pith Number

pith:GT7KC3FW

pith:2009:GT7KC3FWI4P23ILYPGOXYQLCIE

not attested not anchored not stored refs pending

The Frequency of Low-mass Exoplanets

B. Carter, C.G. Tinney, G.W. Marcy, H.R.A. Jones, J. Bailey, R.A. Wittenmyer, R.P. Butler, S.J. O'Toole

arxiv:0906.4619 v2 · 2009-06-25 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GT7KC3FWI4P23ILYPGOXYQLCIE}

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	2026-05-18T04:29:42.597179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34fea16cb6471fada178799d7c41624134b1b428dd03c54f013c41842d2fb0ba

Aliases

arxiv: 0906.4619 · arxiv_version: 0906.4619v2 · doi: 10.48550/arxiv.0906.4619 · pith_short_12: GT7KC3FWI4P2 · pith_short_16: GT7KC3FWI4P23ILY · pith_short_8: GT7KC3FW

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/GT7KC3FWI4P23ILYPGOXYQLCIE \
  | 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: 34fea16cb6471fada178799d7c41624134b1b428dd03c54f013c41842d2fb0ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebb6830ca5684a1cf0c6e658beb7ebdafd9fe163ae3e29847edefe15c67b5700",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-06-25T07:25:42Z",
    "title_canon_sha256": "a2c9441e37d3087cef3d73739bc6b3a42f74e6856e5b73e8390bd0f3044fcc46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4619",
    "kind": "arxiv",
    "version": 2
  }
}