Pith Number

pith:DW7GJPYU

pith:2009:DW7GJPYUBJS2NHHJ6EIVSBQ3UY

not attested not anchored not stored refs pending

High-precision photometry by telescope defocussing. II. The transiting planetary system WASP-4

A. Hornstrup, C. C. Thone, C. Liebig, C. Snodgrass, D. Ricci, G. Masi, G. Scarpetta, John Southworth, J. Surdej, K. Harpsoe, L. Mancini, M. Dominik, M. J. Burgdorf, M. Mathiasen, M. Zub, S. Calchi Novati, S. Rahvar, T. Anguita, T. C. Hinse, U. G. Jorgensen, V. Bozza

arxiv:0907.3356 v1 · 2009-07-20 · astro-ph.SR · 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{DW7GJPYUBJS2NHHJ6EIVSBQ3UY}

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	2026-05-18T02:12:55.658520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dbe64bf140a65a69ce9f11159061ba6325527fc2eb56637a5a92702fe14ef89

Aliases

arxiv: 0907.3356 · arxiv_version: 0907.3356v1 · doi: 10.48550/arxiv.0907.3356 · pith_short_12: DW7GJPYUBJS2 · pith_short_16: DW7GJPYUBJS2NHHJ · pith_short_8: DW7GJPYU

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/DW7GJPYUBJS2NHHJ6EIVSBQ3UY \
  | 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: 1dbe64bf140a65a69ce9f11159061ba6325527fc2eb56637a5a92702fe14ef89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "209fbdff827d8adfa88c88a592400a0c2dbf3ed09dccc5765468b30c2c6a524d",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-20T08:47:28Z",
    "title_canon_sha256": "400c1977cc64c28ebf441c5625b4e1764d2093d2af9442195dd463f464605408"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3356",
    "kind": "arxiv",
    "version": 1
  }
}