Pith Number

pith:V643SH3D

pith:2015:V643SH3DLXTRQCH3BCNKZJMSZE

not attested not anchored not stored refs pending

Spectrally resolved detection of sodium in the atmosphere of HD189733b with the HARPS spectrograph

A. Wyttenbach, C. Lovis, D. Ehrenreich, F. Pepe, S. Udry

arxiv:1503.05581 v1 · 2015-03-18 · 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{V643SH3DLXTRQCH3BCNKZJMSZE}

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	2026-05-18T02:17:00.250526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afb9b91f635de71808fb089aaca592c92b9ef8b2dee4474bf8fa76338d01972f

Aliases

arxiv: 1503.05581 · arxiv_version: 1503.05581v1 · doi: 10.48550/arxiv.1503.05581 · pith_short_12: V643SH3DLXTR · pith_short_16: V643SH3DLXTRQCH3 · pith_short_8: V643SH3D

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/V643SH3DLXTRQCH3BCNKZJMSZE \
  | 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: afb9b91f635de71808fb089aaca592c92b9ef8b2dee4474bf8fa76338d01972f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33a96b04ea0603450351f8b43678a955447c5f83000fb32320e502fa741eb952",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-03-18T20:56:03Z",
    "title_canon_sha256": "a8693d40438e0fcaf1044d922690286df6ee023e73d7c58d3d303a752563d337"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05581",
    "kind": "arxiv",
    "version": 1
  }
}