Pith Number

pith:4ISVBIZ5

pith:2009:4ISVBIZ5WP3HWQ27JRVDU5UX7X

not attested not anchored not stored refs pending

Detection and Characterization of Extrasolar Planets through Doppler Spectroscopy

A. Eggenberger, S. Udry

arxiv:0904.0415 v1 · 2009-04-02 · 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{4ISVBIZ5WP3HWQ27JRVDU5UX7X}

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	2026-05-18T02:14:07.930009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e22550a33db3f67b435f4c6a3a7697fde6f55cea610f295747c4e729796811fa

Aliases

arxiv: 0904.0415 · arxiv_version: 0904.0415v1 · doi: 10.48550/arxiv.0904.0415 · pith_short_12: 4ISVBIZ5WP3H · pith_short_16: 4ISVBIZ5WP3HWQ27 · pith_short_8: 4ISVBIZ5

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/4ISVBIZ5WP3HWQ27JRVDU5UX7X \
  | 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: e22550a33db3f67b435f4c6a3a7697fde6f55cea610f295747c4e729796811fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f1dab4b64732856fff5f1a9492fcf776a6433b32d883903f29d3695d7f30469",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-04-02T16:19:37Z",
    "title_canon_sha256": "d49622a9b51771cfc11b63b37f40cb6ba80534b48df17089b3e2a3ec7f5d4a29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0415",
    "kind": "arxiv",
    "version": 1
  }
}