Pith Number

pith:QP6K4XVZ

pith:2009:QP6K4XVZMU4HNOAZ37U4UOF4Y2

not attested not anchored not stored refs pending

Orbital Constraints on the beta Pic Inner Planet Candidate with Keck Adaptive Optics

James R. Graham, Michael P. Fitzgerald, Paul Kalas

arxiv:0909.4306 v1 · 2009-09-23 · 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{QP6K4XVZMU4HNOAZ37U4UOF4Y2}

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	2026-05-18T02:11:38.280269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83fcae5eb9653876b819dfe9ca38bcc6843beffda692d5ae01d6f820269091cd

Aliases

arxiv: 0909.4306 · arxiv_version: 0909.4306v1 · doi: 10.48550/arxiv.0909.4306 · pith_short_12: QP6K4XVZMU4H · pith_short_16: QP6K4XVZMU4HNOAZ · pith_short_8: QP6K4XVZ

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/QP6K4XVZMU4HNOAZ37U4UOF4Y2 \
  | 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: 83fcae5eb9653876b819dfe9ca38bcc6843beffda692d5ae01d6f820269091cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f35ec7199b78f3ffa111ef2afeec5179df970d4f57da0c0c051a24ed69ef382",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-09-23T20:14:14Z",
    "title_canon_sha256": "c27d489f36c9d88a51b2d0a6c7c466c178228e63a8ec893a2d16b4bfa502b558"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4306",
    "kind": "arxiv",
    "version": 1
  }
}