Pith Number

pith:BCSXYD5B

pith:2013:BCSXYD5BO5OY7HQTYTPLYORMFD

not attested not anchored not stored refs pending

Two planetary companions around the K7 dwarf GJ 221 : a hot super-Earth and a candidate in the sub-Saturn desert range

Dante Minniti, Guillem Anglada-Escud\'e, Ian Thompson, Jeffrey D. Crane, Pamela Arriagada, R. Paul Butler, Sebastian Wende, Stephen A. Shectman

arxiv:1305.2203 v1 · 2013-05-09 · 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{BCSXYD5BO5OY7HQTYTPLYORMFD}

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	2026-05-18T01:50:03.985120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08a57c0fa1775d8f9e13c4debc3a2c28c97e2922156d413c8a2baa6da8c56c2e

Aliases

arxiv: 1305.2203 · arxiv_version: 1305.2203v1 · doi: 10.48550/arxiv.1305.2203 · pith_short_12: BCSXYD5BO5OY · pith_short_16: BCSXYD5BO5OY7HQT · pith_short_8: BCSXYD5B

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/BCSXYD5BO5OY7HQTYTPLYORMFD \
  | 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: 08a57c0fa1775d8f9e13c4debc3a2c28c97e2922156d413c8a2baa6da8c56c2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddab837bb2e13fb9f3e21c6a568000db7709280a0946fbb0cff7b7d6ef2276b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-05-09T20:03:02Z",
    "title_canon_sha256": "760cc8816b1ce8d127d128402eac095b4fbc00f1df5150d902c7c0aa63898e2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2203",
    "kind": "arxiv",
    "version": 1
  }
}