Pith Number

pith:ZLWAGWEN

pith:2016:ZLWAGWENC4O5X4PHZHNH4SNTLV

not attested not anchored not stored refs pending

A Probabilistic Analysis of the Fermi Paradox

Evan Solomonides, Yervant Terzian

arxiv:1604.07687 v3 · 2016-04-26 · physics.pop-ph · 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{ZLWAGWENC4O5X4PHZHNH4SNTLV}

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	2026-05-18T01:12:22.446909Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

caec03588d171ddbf1e7c9da7e49b35d634076a961e57f3537c4e3a4ef71cef2

Aliases

arxiv: 1604.07687 · arxiv_version: 1604.07687v3 · doi: 10.48550/arxiv.1604.07687 · pith_short_12: ZLWAGWENC4O5 · pith_short_16: ZLWAGWENC4O5X4PH · pith_short_8: ZLWAGWEN

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/ZLWAGWENC4O5X4PHZHNH4SNTLV \
  | 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: caec03588d171ddbf1e7c9da7e49b35d634076a961e57f3537c4e3a4ef71cef2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05838a01e5c8f5c0bfec2ec38bf1b14f211101f08fc0f7f890b57972454759d0",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2016-04-26T14:14:03Z",
    "title_canon_sha256": "839ec61a2f14a8c51fa2b8dd51f78319733204e82fcdf50aa13623a4d84bde55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.07687",
    "kind": "arxiv",
    "version": 3
  }
}