Pith Number

pith:CUYKSY2D

pith:2024:CUYKSY2DPSFEY6JIVLFMYBGBGL

not attested not anchored not stored refs pending

Automated Scheduling of Doppler Exoplanet Observations at Keck Observatory

Erik A. Petigura, Howard Isaacson, Jack Lubin, Luke B. Handley, Velibor V. Misic

arxiv:2402.17734 v1 · 2024-02-27 · astro-ph.IM · 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{CUYKSY2DPSFEY6JIVLFMYBGBGL}

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	2026-07-05T07:49:56.932393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1530a963437c8a4c7928aacacc04c132f300ff19f12a5ce81ac9eedfbb4542c0

Aliases

arxiv: 2402.17734 · arxiv_version: 2402.17734v1 · doi: 10.48550/arxiv.2402.17734 · pith_short_12: CUYKSY2DPSFE · pith_short_16: CUYKSY2DPSFEY6JI · pith_short_8: CUYKSY2D

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/CUYKSY2DPSFEY6JIVLFMYBGBGL \
  | 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: 1530a963437c8a4c7928aacacc04c132f300ff19f12a5ce81ac9eedfbb4542c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b07a201a241e40d0b968246850782acf067779b165f7193c6bf29d3d2d58bfa",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2024-02-27T18:12:22Z",
    "title_canon_sha256": "cb7e32f48df3abf2d56ffd00eb2feee0923731b9b66caa9236343f44c8b937da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2402.17734",
    "kind": "arxiv",
    "version": 1
  }
}