Pith Number

pith:MPGJ6P4K

pith:2011:MPGJ6P4K36GIGH5HTEXSRUBXS2

not attested not anchored not stored refs pending

Discovery of a ~23 Mjup Brown Dwarf Orbiting ~700 AU from the Massive Star HIP 78530 in Upper Scorpius

Christiane Helling, David Lafreni\`ere, Markus Janson, Peter Hauschildt, Ray Jayawardhana, Soeren Witte

arxiv:1101.4666 v1 · 2011-01-24 · astro-ph.SR · 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{MPGJ6P4K36GIGH5HTEXSRUBXS2}

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	2026-05-18T02:03:22.768092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63cc9f3f8adf8c831fa7992f28d03796bd4626fed0bdd2bb1a76e8adc858615d

Aliases

arxiv: 1101.4666 · arxiv_version: 1101.4666v1 · doi: 10.48550/arxiv.1101.4666 · pith_short_12: MPGJ6P4K36GI · pith_short_16: MPGJ6P4K36GIGH5H · pith_short_8: MPGJ6P4K

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/MPGJ6P4K36GIGH5HTEXSRUBXS2 \
  | 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: 63cc9f3f8adf8c831fa7992f28d03796bd4626fed0bdd2bb1a76e8adc858615d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1302bd34a01e6a0b5234375f7c5202cecc420a68839c2a99a06d433f2056feb",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-01-24T21:29:47Z",
    "title_canon_sha256": "feb7d737181c7318bb3700fd6857b6bf0d70c6715ededa64415de2870298f544"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.4666",
    "kind": "arxiv",
    "version": 1
  }
}