Pith Number

pith:XRGMDHOC

pith:2015:XRGMDHOC2OX23KFGTYTGJ6DTC4

not attested not anchored not stored refs pending

Fermi's paradox, extraterrestrial life and the future of humanity: a Bayesian analysis

Olle H\"aggstr\"om, Vilhelm Verendel

arxiv:1510.08684 v2 · 2015-10-29 · 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{XRGMDHOC2OX23KFGTYTGJ6DTC4}

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	2026-05-18T01:26:33.534389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc4cc19dc2d3afada8a69e2664f8731727208c8b4514e316582be6065dadbd5a

Aliases

arxiv: 1510.08684 · arxiv_version: 1510.08684v2 · doi: 10.48550/arxiv.1510.08684 · pith_short_12: XRGMDHOC2OX2 · pith_short_16: XRGMDHOC2OX23KFG · pith_short_8: XRGMDHOC

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/XRGMDHOC2OX23KFGTYTGJ6DTC4 \
  | 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: bc4cc19dc2d3afada8a69e2664f8731727208c8b4514e316582be6065dadbd5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2037817a2804f7195e4ff4e3ba990bf2400efbc4696db3aaa2d5fac6aa7e0ea4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2015-10-29T13:41:54Z",
    "title_canon_sha256": "8e38d5cdd74f1c206b741e8a6ae81335f5f89e29fc5a3c37aba763608b182385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.08684",
    "kind": "arxiv",
    "version": 2
  }
}