Pith Number

pith:I7QE7UMF

pith:2009:I7QE7UMFTDEYQOX5GZMF6TOOCD

not attested not anchored not stored refs pending

Transit spectrophotometry of the exoplanet HD189733b. I. Searching for water but finding haze with HST NICMOS

A. Lecavelier des Etangs, A. Vidal-Madjar, David K. Sing, G. E. Ballester, G. Hebrard, G. W. Henry, J.-M. Desert, V. Parmentier

arxiv:0907.4991 v1 · 2009-07-29 · 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{I7QE7UMFTDEYQOX5GZMF6TOOCD}

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	2026-05-18T02:12:46.908635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47e04fd18598c9883afd36585f4dce10e133c019b38fbac8ecf4f734e0e3ddb1

Aliases

arxiv: 0907.4991 · arxiv_version: 0907.4991v1 · doi: 10.48550/arxiv.0907.4991 · pith_short_12: I7QE7UMFTDEY · pith_short_16: I7QE7UMFTDEYQOX5 · pith_short_8: I7QE7UMF

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/I7QE7UMFTDEYQOX5GZMF6TOOCD \
  | 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: 47e04fd18598c9883afd36585f4dce10e133c019b38fbac8ecf4f734e0e3ddb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0da4bec13b2ec6fc4a0fc1f7f269dae338f089451ce4ef8c04570803544a8322",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-07-29T09:40:01Z",
    "title_canon_sha256": "825342e415053a5465ccf85852e9e6f0b3b3192644ad87b42186a73b975c153c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4991",
    "kind": "arxiv",
    "version": 1
  }
}