Pith Number

pith:BKFREHCQ

pith:2011:BKFREHCQQCM23B6G2R5ZUP6EGA

not attested not anchored not stored refs pending

Detection of a Transiting Low-Density Super-Earth

Andrew W. Howard, Debra A. Fischer, Geoffrey W. Marcy, Gregory W. Henry, John Asher Johnson

arxiv:1109.2549 v2 · 2011-09-12 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BKFREHCQQCM23B6G2R5ZUP6EGA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:58:05.091816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a8b121c508099ad87c6d47b9a3fc4302df6a12c5b5c45a051c82f48ea8af09a

Aliases

arxiv: 1109.2549 · arxiv_version: 1109.2549v2 · doi: 10.48550/arxiv.1109.2549 · pith_short_12: BKFREHCQQCM2 · pith_short_16: BKFREHCQQCM23B6G · pith_short_8: BKFREHCQ

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/BKFREHCQQCM23B6G2R5ZUP6EGA \
  | 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: 0a8b121c508099ad87c6d47b9a3fc4302df6a12c5b5c45a051c82f48ea8af09a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76b36f0814d36368c31e188efe5f6cf4c8e49d9e4f48f8fabc7da65eeba544df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-12T17:55:45Z",
    "title_canon_sha256": "18b7fc9b6f3fad04bc638585c1301c775c387f78a0da13c3cfa24d9856bf8f31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2549",
    "kind": "arxiv",
    "version": 2
  }
}