Pith Number

pith:OODULRPM

pith:2025:OODULRPMSLNIKPEUO46WLOVOBK

not attested not anchored not stored refs pending

Earth Detecting Earth: At what distance could Earth's constellation of technosignatures be detected with present-day technology?

Adam Frank, Connor Martini, Jason T. Wright, Macy J. Huston, Pinchen Fan, Ravi Kopparapu, Sofia Z. Sheikh, Thomas Beatty

arxiv:2502.02614 v1 · 2025-02-03 · astro-ph.IM · astro-ph.EP · 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{OODULRPMSLNIKPEUO46WLOVOBK}

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	2026-07-05T10:09:31.707716Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

738745c5ec92da853c94773d65baae0a9b809583fee7d57ab88e8a85c84f56af

Aliases

arxiv: 2502.02614 · arxiv_version: 2502.02614v1 · doi: 10.48550/arxiv.2502.02614 · pith_short_12: OODULRPMSLNI · pith_short_16: OODULRPMSLNIKPEU · pith_short_8: OODULRPM

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/OODULRPMSLNIKPEUO46WLOVOBK \
  | 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: 738745c5ec92da853c94773d65baae0a9b809583fee7d57ab88e8a85c84f56af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c914c1f197ba22327f97752bd681698ff11542ad895948dc9fa4c0b17086d95",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "physics.pop-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2025-02-03T23:38:01Z",
    "title_canon_sha256": "b6070933aca9028b9583625487ad4f7caf754b24debb999bd3ae1820e3e3ee2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.02614",
    "kind": "arxiv",
    "version": 1
  }
}