Pith Number

pith:7BEQ4J2G

pith:2019:7BEQ4J2GKCBCHATUUJDSVJJJLS

not attested not anchored not stored refs pending

Doppler tomography as a tool for detecting exoplanet atmospheres

Christopher Watson, Danny Steeghs, Ernst de Mooij, Matteo Brogi, Neale Gibson, Shannon Matthews, Tom Marsh

arxiv:1909.09219 v1 · 2019-09-19 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7BEQ4J2GKCBCHATUUJDSVJJJLS}

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	2026-07-05T00:10:44.384661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8490e27465082238274a2472aa5295caa5bab38fb65bd2dad822edd62fe850a

Aliases

arxiv: 1909.09219 · arxiv_version: 1909.09219v1 · doi: 10.48550/arxiv.1909.09219 · pith_short_12: 7BEQ4J2GKCBC · pith_short_16: 7BEQ4J2GKCBCHATU · pith_short_8: 7BEQ4J2G

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/7BEQ4J2GKCBCHATUUJDSVJJJLS \
  | 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: f8490e27465082238274a2472aa5295caa5bab38fb65bd2dad822edd62fe850a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ca4669ac5a601fa23ee810fc3baed3848cabcd47fed8ffb5f973bd736a79cc9",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-09-19T20:09:11Z",
    "title_canon_sha256": "8c69f369aad2a0d2bcb622ee723fb37fbb38e153e14b762848b631584a80e638"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.09219",
    "kind": "arxiv",
    "version": 1
  }
}