Pith Number

pith:36OMHHFE

pith:2025:36OMHHFE74V3UJBHHKICJPTR37

not attested not anchored not stored refs pending

Nitrogen chemistry of hycean worlds on the example of K2-18b

Maja W. Radecka, Paul B. Rimmer

arxiv:2509.03455 v1 · 2025-09-03 · 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{36OMHHFE74V3UJBHHKICJPTR37}

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	2026-07-05T12:04:23.347340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df9cc39ca4ff2bba24273a9024be71dfdb73a66b19a86c9e8b19a647c65cc4ed

Aliases

arxiv: 2509.03455 · arxiv_version: 2509.03455v1 · doi: 10.48550/arxiv.2509.03455 · pith_short_12: 36OMHHFE74V3 · pith_short_16: 36OMHHFE74V3UJBH · pith_short_8: 36OMHHFE

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/36OMHHFE74V3UJBHHKICJPTR37 \
  | 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: df9cc39ca4ff2bba24273a9024be71dfdb73a66b19a86c9e8b19a647c65cc4ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b71ccb10720f16bcde25bbb573772d1a75b2c54f61109c81011e1c4568f50b2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2025-09-03T16:24:52Z",
    "title_canon_sha256": "52f9c6977c1a5731b614110a08d794e0c0a6708f31d7ed622c54981872df1417"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.03455",
    "kind": "arxiv",
    "version": 1
  }
}