Pith Number

pith:55XPR4VY

pith:2009:55XPR4VYQR4DSARCXZ4BFGGMQP

not attested not anchored not stored refs pending

The Calan-Hertfordshire Extrasolar Planet Search

A.C. Day-Jones, C. Migaszewski, D.J. Pinfield, H.R.A. Jones, J.R. Barnes, J.S. Jenkins, K. Gozdziewski, M.I. Jones, P. Rojo, S. Hoyer

arxiv:0912.5325 v1 · 2009-12-29 · 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{55XPR4VYQR4DSARCXZ4BFGGMQP}

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	2026-05-18T02:10:13.280465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef6ef8f2b88478390222be781298cc83dd704a15a4c624d2fa744f5df815d43b

Aliases

arxiv: 0912.5325 · arxiv_version: 0912.5325v1 · doi: 10.48550/arxiv.0912.5325 · pith_short_12: 55XPR4VYQR4D · pith_short_16: 55XPR4VYQR4DSARC · pith_short_8: 55XPR4VY

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/55XPR4VYQR4DSARCXZ4BFGGMQP \
  | 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: ef6ef8f2b88478390222be781298cc83dd704a15a4c624d2fa744f5df815d43b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffde75bb6ed4fa2043859b9650de05eeb726fbb6b6cad0ee2baaca34462e5ee0",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-12-29T16:58:02Z",
    "title_canon_sha256": "ea8936a9705549ec7de9245b9b3d9d8462fc351377f251c57d64e3e07124ab18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.5325",
    "kind": "arxiv",
    "version": 1
  }
}