Pith Number

pith:4WQUFASM

pith:2011:4WQUFASMBABFYGZN7WB2GZACMV

not attested not anchored not stored refs pending

Gliese 581d is the first discovered terrestrial-mass exoplanet in the habitable zone

Benjamin Charnay, Ehouarn Millour, Fran\c{c}ois Forget, Franck Selsis, Jean-Baptiste Madeleine, Robin Wordsworth

arxiv:1105.1031 v1 · 2011-05-05 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WQUFASMBABFYGZN7WB2GZACMV}

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	2026-05-18T02:02:03.956471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5a142824c08025c1b2dfd83a3640265545f6664e4c6dd3e4ffc69bbde92c90c

Aliases

arxiv: 1105.1031 · arxiv_version: 1105.1031v1 · doi: 10.48550/arxiv.1105.1031 · pith_short_12: 4WQUFASMBABF · pith_short_16: 4WQUFASMBABFYGZN · pith_short_8: 4WQUFASM

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/4WQUFASMBABFYGZN7WB2GZACMV \
  | 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: e5a142824c08025c1b2dfd83a3640265545f6664e4c6dd3e4ffc69bbde92c90c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dbfd61c1b50cdae1906f568d638df64f9fdbf564c4403551a27329de6698be4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-05-05T10:50:30Z",
    "title_canon_sha256": "b14bd2717cfc4b173d8699cf954c4a423af72967376b658e806875a15b2f2c74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.1031",
    "kind": "arxiv",
    "version": 1
  }
}