Pith Number

pith:KH3VF7SM

pith:2018:KH3VF7SMJIAHFKJAPEFEVTZAY7

not attested not anchored not stored refs pending

SETI with Gaia: The observational signatures of nearly complete Dyson spheres

Andreas J. Korn, Ansgar Wehrhahn, Erik Zackrisson, Johannes Reiter

arxiv:1804.08351 v2 · 2018-04-23 · 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{KH3VF7SMJIAHFKJAPEFEVTZAY7}

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	2026-05-18T00:09:25.075591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51f752fe4c4a0072a920790a4acf20c7d849006e6f83e6234fb457e4e5f57cc3

Aliases

arxiv: 1804.08351 · arxiv_version: 1804.08351v2 · doi: 10.48550/arxiv.1804.08351 · pith_short_12: KH3VF7SMJIAH · pith_short_16: KH3VF7SMJIAHFKJA · pith_short_8: KH3VF7SM

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/KH3VF7SMJIAHFKJAPEFEVTZAY7 \
  | 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: 51f752fe4c4a0072a920790a4acf20c7d849006e6f83e6234fb457e4e5f57cc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "504ec5fb7b69375a89ad3b38e01467d9d3b8f7773148b2547a054773d43dea72",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-23T11:49:47Z",
    "title_canon_sha256": "44c7ba83de322e81fefc848a6bf5bdabc6c5085471e6ad06df370c1f9796475b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08351",
    "kind": "arxiv",
    "version": 2
  }
}