Pith Number

pith:XGQXDO36

pith:2018:XGQXDO36HPFW3U3QUY53DPPQWQ

not attested not anchored not stored refs pending

Optimal Target Stars in the Search for Life

Abraham Loeb, Manasvi Lingam

arxiv:1803.07570 v2 · 2018-03-20 · 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{XGQXDO36HPFW3U3QUY53DPPQWQ}

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	2026-05-18T00:17:53.222709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9a171bb7e3bcb6dd370a63bb1bdf0b40fe275bcd16ff2a6fdf93eaf288a76e3

Aliases

arxiv: 1803.07570 · arxiv_version: 1803.07570v2 · doi: 10.48550/arxiv.1803.07570 · pith_short_12: XGQXDO36HPFW · pith_short_16: XGQXDO36HPFW3U3Q · pith_short_8: XGQXDO36

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/XGQXDO36HPFW3U3QUY53DPPQWQ \
  | 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: b9a171bb7e3bcb6dd370a63bb1bdf0b40fe275bcd16ff2a6fdf93eaf288a76e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "472ee740bf99e873821422b20b8a1e76b5b0b783f51cec58d81cc9abd795a1ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-03-20T18:00:11Z",
    "title_canon_sha256": "b1741f3db2c6b95f6f564b665bcc0d37b5d5c78acb162c981b7d66aadd2a8b17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07570",
    "kind": "arxiv",
    "version": 2
  }
}