Pith Number

pith:KYTKH3XK

pith:2018:KYTKH3XKPOPPFXLD77NDBGFD34

not attested not anchored not stored refs pending

Computing the minimal crew for a multi-generational space travel towards Proxima Centauri b

C. Beluffi, F. Marin

arxiv:1806.03856 v1 · 2018-06-11 · astro-ph.IM · physics.pop-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KYTKH3XKPOPPFXLD77NDBGFD34}

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	2026-05-18T00:13:41.824996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5626a3eeea7b9ef2dd63ffda3098a3df18a9e43877f7d64f9165bff927501321

Aliases

arxiv: 1806.03856 · arxiv_version: 1806.03856v1 · doi: 10.48550/arxiv.1806.03856 · pith_short_12: KYTKH3XKPOPP · pith_short_16: KYTKH3XKPOPPFXLD · pith_short_8: KYTKH3XK

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/KYTKH3XKPOPPFXLD77NDBGFD34 \
  | 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: 5626a3eeea7b9ef2dd63ffda3098a3df18a9e43877f7d64f9165bff927501321

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d230d3914b07ace4d52489878d05641a19591b3f57b75b0b1a8dbe3f39ff33f6",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-06-11T08:32:49Z",
    "title_canon_sha256": "1748396cf8ff9ef1ac8741e1bb08bed0ccecfe88acf984890926f1da35dd19f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.03856",
    "kind": "arxiv",
    "version": 1
  }
}