Pith Number

pith:FYM4S25W

pith:2016:FYM4S25WKJ7JSFXOYUGXNUCLI5

not attested not anchored not stored refs pending

The longevity of habitable planets and the development of intelligent life

Fergus Simpson

arxiv:1601.05063 v2 · 2016-01-19 · 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{FYM4S25WKJ7JSFXOYUGXNUCLI5}

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	2026-05-18T01:06:40.837771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e19c96bb6527e9916eec50d76d04b474ffdfa1c8c7068e8fc881090d760c9e7

Aliases

arxiv: 1601.05063 · arxiv_version: 1601.05063v2 · doi: 10.48550/arxiv.1601.05063 · pith_short_12: FYM4S25WKJ7J · pith_short_16: FYM4S25WKJ7JSFXO · pith_short_8: FYM4S25W

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/FYM4S25WKJ7JSFXOYUGXNUCLI5 \
  | 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: 2e19c96bb6527e9916eec50d76d04b474ffdfa1c8c7068e8fc881090d760c9e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a30ad8b5e69a491ce28dc97b8f4662696c18dc08170066061cd4dd964367b21",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2016-01-19T20:18:21Z",
    "title_canon_sha256": "53cccf429e2b75b94e87f99c479ad89249bdf8ddda18c465518521ea4c134df5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.05063",
    "kind": "arxiv",
    "version": 2
  }
}