Pith Number

pith:YA4M765Y

pith:2009:YA4M765YHEOMF4U5W6F6CD5MEQ

not attested not anchored not stored refs pending

Hipparcos preliminary astrometric masses for the two close-in companions to HD 131664 and HD 43848. A brown dwarf and a low mass star

(2) INAF - Osservatorio Astronomico di Padova), A. Sozzetti (1), S. Desidera ((1) INAF - Osservatorio Astronomico di Torino

arxiv:0909.4454 v1 · 2009-09-24 · 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{YA4M765YHEOMF4U5W6F6CD5MEQ}

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	2026-05-18T02:11:38.013053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c038cffbb8391cc2f29db78be10fac2439f8b7ecc28823d0c944d5544ad33485

Aliases

arxiv: 0909.4454 · arxiv_version: 0909.4454v1 · doi: 10.48550/arxiv.0909.4454 · pith_short_12: YA4M765YHEOM · pith_short_16: YA4M765YHEOMF4U5 · pith_short_8: YA4M765Y

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/YA4M765YHEOMF4U5W6F6CD5MEQ \
  | 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: c038cffbb8391cc2f29db78be10fac2439f8b7ecc28823d0c944d5544ad33485

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3d9869113a55af68833e9030b2b0fc4b52fe16e5a24b70037f1c97d5da18965",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-09-24T14:14:55Z",
    "title_canon_sha256": "9e7f9a77e3576d37c155b14b5cf525a5ca484006e961b3b3705c9af0a88aa180"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4454",
    "kind": "arxiv",
    "version": 1
  }
}