Pith Number

pith:PDKKZSHL

pith:2018:PDKKZSHLUL4IWC2O5KU2L73RFS

not attested not anchored not stored refs pending

Dissolving the Fermi Paradox

Anders Sandberg, Eric Drexler, Toby Ord

arxiv:1806.02404 v1 · 2018-06-06 · 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{PDKKZSHLUL4IWC2O5KU2L73RFS}

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	2026-05-18T00:13:56.979895Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78d4acc8eba2f88b0b4eeaa9a5ff712c921f302ef24036ac756fb052ff7ccd68

Aliases

arxiv: 1806.02404 · arxiv_version: 1806.02404v1 · doi: 10.48550/arxiv.1806.02404 · pith_short_12: PDKKZSHLUL4I · pith_short_16: PDKKZSHLUL4IWC2O · pith_short_8: PDKKZSHL

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/PDKKZSHLUL4IWC2O5KU2L73RFS \
  | 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: 78d4acc8eba2f88b0b4eeaa9a5ff712c921f302ef24036ac756fb052ff7ccd68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b116d62d52eecc2cfa4ff1d03f450c8e6dbc8dbaf9211fb6bf96fa7abb0ac6c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2018-06-06T19:51:21Z",
    "title_canon_sha256": "beb18258c614eeb94ba3dc0e6080c8f7f039baeca38545bae7350a6ac4755ceb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.02404",
    "kind": "arxiv",
    "version": 1
  }
}