Pith Number

pith:3JYPLPAA

pith:2022:3JYPLPAAP4NSLYKYF5AFULQ5QN

not attested not anchored not stored refs pending

Estimating the prevalence of malicious extraterrestrial civilizations

Alberto Caballero

arxiv:2205.11618 v1 · 2022-05-23 · physics.soc-ph · 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{3JYPLPAAP4NSLYKYF5AFULQ5QN}

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	2026-07-05T04:26:37.923034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da70f5bc007f1b25e1582f405a2e1d836d20630140fa07a778993ccafb1bedcc

Aliases

arxiv: 2205.11618 · arxiv_version: 2205.11618v1 · doi: 10.48550/arxiv.2205.11618 · pith_short_12: 3JYPLPAAP4NS · pith_short_16: 3JYPLPAAP4NSLYKY · pith_short_8: 3JYPLPAA

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/3JYPLPAAP4NSLYKYF5AFULQ5QN \
  | 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: da70f5bc007f1b25e1582f405a2e1d836d20630140fa07a778993ccafb1bedcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a51b1e5c5f4c0b079aa347fb834dc4747fac1a7826e099fa2d5c44c7c81fac6",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2022-05-23T20:32:57Z",
    "title_canon_sha256": "6cd47137a09c1e503b11569a0b0c4d63eecd01d371e2dc3be653932d5a71afae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.11618",
    "kind": "arxiv",
    "version": 1
  }
}