Pith Number

pith:2QZC2DQK

pith:2025:2QZC2DQKA2MYUAEMQDNCZQL3QJ

not attested not anchored not stored refs pending

Life after death: Europa in the evolving Habitable Zone of a Red Sun

Britney Schmidt, Elijah Mullens, Lisa Kaltenegger, Nikole K. Lewis

arxiv:2505.15495 v1 · 2025-05-21 · astro-ph.EP · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2QZC2DQKA2MYUAEMQDNCZQL3QJ}

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	2026-07-05T11:06:46.793174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4322d0e0a06998a008c80da2cc17b8267233c8daaecb7b1dada3f5e1377ec3f

Aliases

arxiv: 2505.15495 · arxiv_version: 2505.15495v1 · doi: 10.48550/arxiv.2505.15495 · pith_short_12: 2QZC2DQKA2MY · pith_short_16: 2QZC2DQKA2MYUAEM · pith_short_8: 2QZC2DQK

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/2QZC2DQKA2MYUAEMQDNCZQL3QJ \
  | 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: d4322d0e0a06998a008c80da2cc17b8267233c8daaecb7b1dada3f5e1377ec3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84138b204835ccac5a9b3f8ac67066d4d9ea45f36914f0c832ab061f7c53f237",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2025-05-21T13:22:05Z",
    "title_canon_sha256": "3f242b39e8a0e560c97a1fd580ed60b576508ff73abea53f295c89d14167299f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.15495",
    "kind": "arxiv",
    "version": 1
  }
}