Pith Number

pith:QLU2ZSU2

pith:2025:QLU2ZSU247OMRSNTOUDSOOG4BC

not attested not anchored not stored refs pending

Exoplanetary atmospheres retrieval via a quantum extreme learning machine

G.Massimo Palma, Marco Vetrano, Salvatore Lorenzo, Tiziano Zingales

arxiv:2509.03617 v1 · 2025-09-03 · quant-ph · astro-ph.EP · astro-ph.IM · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QLU2ZSU247OMRSNTOUDSOOG4BC}

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	2026-07-05T12:04:43.227559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82e9acca9ae7dcc8c9b375072738dc088ffdd9e0495c27475bd0b374781345a0

Aliases

arxiv: 2509.03617 · arxiv_version: 2509.03617v1 · doi: 10.48550/arxiv.2509.03617 · pith_short_12: QLU2ZSU247OM · pith_short_16: QLU2ZSU247OMRSNT · pith_short_8: QLU2ZSU2

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/QLU2ZSU247OMRSNTOUDSOOG4BC \
  | 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: 82e9acca9ae7dcc8c9b375072738dc088ffdd9e0495c27475bd0b374781345a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abcb1ac712b5b28f55f4e919dfab2b1cf671b83e6dd655a4ea58b1ab0c8c0466",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.IM",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-09-03T18:10:07Z",
    "title_canon_sha256": "f0ba4c9d893f6d8338372b0100b970ce84e32a3158a2242f3fd12c03c2a93470"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.03617",
    "kind": "arxiv",
    "version": 1
  }
}