Pith Number

pith:UHNBJRHI

pith:2009:UHNBJRHI2RXCTGSEMJETLALQ4O

not attested not anchored not stored refs pending

Direct Detection of Planets Orbiting Large Angular Diameter Stars: Sensitivity of an Internally-Occulting Space-Based Coronagraph

Jian Ge (University of Florida), Justin R. Crepp (Caltech), Suvrath Mahadevan (Penn State)

arxiv:0909.2259 v1 · 2009-09-11 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UHNBJRHI2RXCTGSEMJETLALQ4O}

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	2026-05-18T02:11:48.759760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1da14c4e8d46e299a446249358170e39bd0f62ec25a62e9fd9e58dc1f8cf2fa

Aliases

arxiv: 0909.2259 · arxiv_version: 0909.2259v1 · doi: 10.48550/arxiv.0909.2259 · pith_short_12: UHNBJRHI2RXC · pith_short_16: UHNBJRHI2RXCTGSE · pith_short_8: UHNBJRHI

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/UHNBJRHI2RXCTGSEMJETLALQ4O \
  | 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: a1da14c4e8d46e299a446249358170e39bd0f62ec25a62e9fd9e58dc1f8cf2fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "609a0d1c3f89f610594b94c48396b2eab33db03d93b091321fbf89236595234e",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-09-11T20:43:48Z",
    "title_canon_sha256": "f39a52f489f3757442cbeed74f102d1f5ea2da7bf7e360bff588e66c33100116"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2259",
    "kind": "arxiv",
    "version": 1
  }
}