Pith Number

pith:SM4B7654

pith:2012:SM4B7654UFXJB3UNYUIPCMLSQ6

not attested not anchored not stored refs pending

Masses, Radii, and Cloud Properties of the HR 8799 Planets

Andrew S. Ackerman, Didier Saumon, Jonathan J. Fortney, Mark S. Marley, Michael Cushing, Richard Freedman

arxiv:1205.6488 v2 · 2012-05-29 · 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{SM4B7654UFXJB3UNYUIPCMLSQ6}

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	2026-05-18T01:57:15.813139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93381ffbbca16e90ee8dc510f13172878512683300191b15e78cdb21502cd6fd

Aliases

arxiv: 1205.6488 · arxiv_version: 1205.6488v2 · doi: 10.48550/arxiv.1205.6488 · pith_short_12: SM4B7654UFXJ · pith_short_16: SM4B7654UFXJB3UN · pith_short_8: SM4B7654

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/SM4B7654UFXJB3UNYUIPCMLSQ6 \
  | 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: 93381ffbbca16e90ee8dc510f13172878512683300191b15e78cdb21502cd6fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7116328f06839e53f806c45fad3a9843a90771005e6f28139c98229aceb974b9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-05-29T20:35:55Z",
    "title_canon_sha256": "edaa52d245c5cadf4241df772a0bd4a6d8405e674985d962a960c2c003c78252"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.6488",
    "kind": "arxiv",
    "version": 2
  }
}