Pith Number

pith:QFK2N6DO

pith:2013:QFK2N6DO2WKVPGFRRFIXJDQQLT

not attested not anchored not stored refs pending

Prevalence of Earth-size planets orbiting Sun-like stars

Andrew W. Howard, Erik A. Petigura, Geoffrey W. Marcy

arxiv:1311.6806 v1 · 2013-11-26 · 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{QFK2N6DO2WKVPGFRRFIXJDQQLT}

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	2026-05-18T03:06:05.794791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8155a6f86ed5955798b18951748e105cc0d65e9ff55344819d4947e2b0ed763d

Aliases

arxiv: 1311.6806 · arxiv_version: 1311.6806v1 · doi: 10.48550/arxiv.1311.6806 · pith_short_12: QFK2N6DO2WKV · pith_short_16: QFK2N6DO2WKVPGFR · pith_short_8: QFK2N6DO

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/QFK2N6DO2WKVPGFRRFIXJDQQLT \
  | 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: 8155a6f86ed5955798b18951748e105cc0d65e9ff55344819d4947e2b0ed763d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2e76f214ba0131c6e3b11b9b8578b791140e95d363317544f55667b463620ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-11-26T20:59:35Z",
    "title_canon_sha256": "7517ef1c8c1f9d0e42f7e84a727ab0e933c7bb5245fec9e65620f010ba76c143"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6806",
    "kind": "arxiv",
    "version": 1
  }
}