Pith Number

pith:7WKWVDFN

pith:2002:7WKWVDFNKCE6W45OD5WFNK5NA7

not attested not anchored not stored refs pending

An exoplanet in orbit around tau^1 Gruis

Alan J. Penny, Brad D. Carter, Chris G. Tinney, Chris McCarthy, Geoff W. Marcy, Hugh R.A. Jones, R. Paul Butler

arxiv:astro-ph/0209302 v1 · 2002-09-16 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WKWVDFNKCE6W45OD5WFNK5NA7}

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	2026-05-18T04:27:05.070519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd956a8cad5089eb73ae1f6c56abad07dbd22f23413f8e55281f4925cc4ea113

Aliases

arxiv: astro-ph/0209302 · arxiv_version: astro-ph/0209302v1 · doi: 10.48550/arxiv.astro-ph/0209302 · pith_short_12: 7WKWVDFNKCE6 · pith_short_16: 7WKWVDFNKCE6W45O · pith_short_8: 7WKWVDFN

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/7WKWVDFNKCE6W45OD5WFNK5NA7 \
  | 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: fd956a8cad5089eb73ae1f6c56abad07dbd22f23413f8e55281f4925cc4ea113

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "860134fc364ca9d8ea7396135169a0009354363600827c5a0e817414525d6858",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-16T16:36:32Z",
    "title_canon_sha256": "26b8696f739a560ced97cd405d7cc7861848f37977cc53043991abb07927b609"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209302",
    "kind": "arxiv",
    "version": 1
  }
}