Pith Number

pith:F2AD2ZW5

pith:2009:F2AD2ZW5FK7QYK5PBUMLKI7DNB

not attested not anchored not stored refs pending

Discovery of a Faint Companion to Alcor Using MMT/AO 5 $\mu$m Imaging

(2) Steward Observatory, 3) ((1) University of Rochester, (3) Institute for Astronomy, Eric E. Mamajek (1), ETH Zurich), Matthew A. Kenworthy (2), Michael R. Meyer (2, Philip M. Hinz (2), University of Arizona

arxiv:0911.5028 v2 · 2009-11-26 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F2AD2ZW5FK7QYK5PBUMLKI7DNB}

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	2026-05-18T02:10:36.535828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e803d66dd2abf0c2baf0d18b523e3685b2fc9ead8761b7ed77bc242e859946f

Aliases

arxiv: 0911.5028 · arxiv_version: 0911.5028v2 · doi: 10.48550/arxiv.0911.5028 · pith_short_12: F2AD2ZW5FK7Q · pith_short_16: F2AD2ZW5FK7QYK5P · pith_short_8: F2AD2ZW5

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/F2AD2ZW5FK7QYK5PBUMLKI7DNB \
  | 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: 2e803d66dd2abf0c2baf0d18b523e3685b2fc9ead8761b7ed77bc242e859946f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "096dc8a12d4769334151d46a4dd23b75311d558586742bbec61b3c13fd0e7e4d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-26T08:38:45Z",
    "title_canon_sha256": "462c3d725cdd97933b71bc0f5501606b188848c0b9be407d1ec92547abc431fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5028",
    "kind": "arxiv",
    "version": 2
  }
}