Pith Number

pith:S4T7EHM6

pith:2005:S4T7EHM667D3K7NS3D7GCITGOF

not attested not anchored not stored refs pending

The HARPS search for southern extra-solar planets. VI. A Neptune-mass planet around the nearby M dwarf Gl 581

C. Perrier, D. Queloz, F. Bouchy, F. Pepe, J.-L. Bertaux, M. Mayor, S. Udry, T. Forveille, X. Bonfils, X. Delfosse

arxiv:astro-ph/0509211 v1 · 2005-09-08 · 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{S4T7EHM667D3K7NS3D7GCITGOF}

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	2026-07-04T16:52:52.584988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9727f21d9ef7c7b57db2d8fe612266715fd916f8dfd36a6444248dde7f8a3691

Aliases

arxiv: astro-ph/0509211 · arxiv_version: astro-ph/0509211v1 · doi: 10.48550/arxiv.astro-ph/0509211 · pith_short_12: S4T7EHM667D3 · pith_short_16: S4T7EHM667D3K7NS · pith_short_8: S4T7EHM6

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/S4T7EHM667D3K7NS3D7GCITGOF \
  | 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: 9727f21d9ef7c7b57db2d8fe612266715fd916f8dfd36a6444248dde7f8a3691

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6319fecdc18df3661f065e6edd19c7be7de52b5616e0564230801c4d8547dac3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-08T10:33:42Z",
    "title_canon_sha256": "0079e33f3d2a66af8895e97026d539e19c1ec2cffd9ec80b0e7603b28fb74d8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509211",
    "kind": "arxiv",
    "version": 1
  }
}