Pith Number

pith:M33MVLKU

pith:2015:M33MVLKUK66S45GZQEFA2ZDCEN

not attested not anchored not stored refs pending

The Closest Known Flyby of a Star to the Solar System

Alexei Y. Kniazev, Eric E. Mamajek, Henri M. J. Boffin, Petri Vaisanen, Scott A. Barenfeld, Valentin D. Ivanov, Yuri Beletsky

arxiv:1502.04655 v1 · 2015-02-16 · 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{M33MVLKUK66S45GZQEFA2ZDCEN}

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	2026-05-18T02:26:59.411671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66f6caad5457bd2e74d9810a0d64622379922e6c0f3a7cffec0e7eac0784703a

Aliases

arxiv: 1502.04655 · arxiv_version: 1502.04655v1 · doi: 10.48550/arxiv.1502.04655 · pith_short_12: M33MVLKUK66S · pith_short_16: M33MVLKUK66S45GZ · pith_short_8: M33MVLKU

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/M33MVLKUK66S45GZQEFA2ZDCEN \
  | 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: 66f6caad5457bd2e74d9810a0d64622379922e6c0f3a7cffec0e7eac0784703a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efd29a04145d3363f4c0b236130fa5c627056ca8c53c62cef009f4ed55db2fd5",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-02-16T18:17:52Z",
    "title_canon_sha256": "0d05b4a1ac5112d36d8ed4fd373417a25ede9a6c25aa3c3aa313b43c59687a75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04655",
    "kind": "arxiv",
    "version": 1
  }
}