Pith Number

pith:UKMSXICE

pith:2015:UKMSXICECSJELGLVA2WTGVKXCV

not attested not anchored not stored refs pending

The Size Distribution of Inhabited Planets

Fergus Simpson

arxiv:1503.07804 v3 · 2015-03-15 · 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{UKMSXICECSJELGLVA2WTGVKXCV}

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	2026-05-18T01:18:14.703334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2992ba044149245997506ad3355571548c04b6052ecd1a1d24f19ab38268b0d

Aliases

arxiv: 1503.07804 · arxiv_version: 1503.07804v3 · doi: 10.48550/arxiv.1503.07804 · pith_short_12: UKMSXICECSJE · pith_short_16: UKMSXICECSJELGLV · pith_short_8: UKMSXICE

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/UKMSXICECSJELGLVA2WTGVKXCV \
  | 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: a2992ba044149245997506ad3355571548c04b6052ecd1a1d24f19ab38268b0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b17cab3f62a6f2a534d62c66b49ab11d6ec72b748cb81340c767042576dcb5a",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2015-03-15T17:19:47Z",
    "title_canon_sha256": "c2b89aed50bc0d24ca9cea6c4a45146ac5ee944eda7d716de6995c88cf98903d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07804",
    "kind": "arxiv",
    "version": 3
  }
}