Pith Number

pith:Q5AP4WBM

pith:2008:Q5AP4WBM2AZ33TFYFL2TAXK4MX

not attested not anchored not stored refs pending

Stability of the directly imaged multiplanet system HR 8799: resonance and masses

Daniel C. Fabrycky, Ruth A. Murray-Clay

arxiv:0812.0011 v2 · 2008-12-01 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q5AP4WBM2AZ33TFYFL2TAXK4MX}

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	2026-05-18T04:29:24.831723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8740fe582cd033bdccb82af5305d5c65e0fab25e7fa4f0f0e455d7737f6be6ec

Aliases

arxiv: 0812.0011 · arxiv_version: 0812.0011v2 · doi: 10.48550/arxiv.0812.0011 · pith_short_12: Q5AP4WBM2AZ3 · pith_short_16: Q5AP4WBM2AZ33TFY · pith_short_8: Q5AP4WBM

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/Q5AP4WBM2AZ33TFYFL2TAXK4MX \
  | 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: 8740fe582cd033bdccb82af5305d5c65e0fab25e7fa4f0f0e455d7737f6be6ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f347765abb90f1eaaf03974f8fa67b0e6e50d42ea2dd07afe59760fe329386ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-01T20:50:26Z",
    "title_canon_sha256": "4c81db3bc01fec625cccf0c4e269026ecc3712559c37ea3a4771a5a8ffc9ced0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.0011",
    "kind": "arxiv",
    "version": 2
  }
}