Pith Number

pith:X7SOAHPF

pith:2018:X7SOAHPFGAOW4LAHE7CPO65QVV

not attested not anchored not stored refs pending

Is Extraterrestrial Life Suppressed on Subsurface Ocean Worlds due to the Paucity of Bioessential Elements?

Abraham Loeb, Manasvi Lingam

arxiv:1806.00018 v2 · 2018-05-31 · 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{X7SOAHPFGAOW4LAHE7CPO65QVV}

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	2026-05-18T00:05:56.002376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfe4e01de5301d6e2c0727c4f77bb0ad695f6ce90b081fb45a5bbb08b901b5a3

Aliases

arxiv: 1806.00018 · arxiv_version: 1806.00018v2 · doi: 10.48550/arxiv.1806.00018 · pith_short_12: X7SOAHPFGAOW · pith_short_16: X7SOAHPFGAOW4LAH · pith_short_8: X7SOAHPF

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/X7SOAHPFGAOW4LAHE7CPO65QVV \
  | 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: bfe4e01de5301d6e2c0727c4f77bb0ad695f6ce90b081fb45a5bbb08b901b5a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "271f4e8ebfd56c8e2288f9c1fcf1be87a72020c44e5baf783da5032bf2e78d6a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-05-31T18:00:06Z",
    "title_canon_sha256": "80ef2c72979a3d15917adb0510cde1ac3efcf35492d800888414c042f6e2c1c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.00018",
    "kind": "arxiv",
    "version": 2
  }
}