Pith Number

pith:4QXUK4FJ

pith:2025:4QXUK4FJXMSB35ZDEGWS7VCTYC

not attested not anchored not stored refs pending

QUEST (Quasar Unsupervised Encoder and Synthesis Tool): A machine learning framework to generate quasar spectra

D. Yang, F. B. Davies, F. Guarneri, J. F. Hennawi, J. T. Schindler, L. Lucie-Smith, R. A. Meyer, S. E. I. Bosman

arxiv:2510.23206 v1 · 2025-10-27 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QXUK4FJXMSB35ZDEGWS7VCTYC}

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	2026-05-20T14:03:22.042293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e42f4570a9bb241df72321ad2fd453c0b1ebeb8da7ecca69755da5b36044e2a8

Aliases

arxiv: 2510.23206 · arxiv_version: 2510.23206v1 · doi: 10.48550/arxiv.2510.23206 · pith_short_12: 4QXUK4FJXMSB · pith_short_16: 4QXUK4FJXMSB35ZD · pith_short_8: 4QXUK4FJ

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/4QXUK4FJXMSB35ZDEGWS7VCTYC \
  | 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: e42f4570a9bb241df72321ad2fd453c0b1ebeb8da7ecca69755da5b36044e2a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a2af7ea490b6fa14950c7d5e65cb5673ac43dcf694589f5d54e3d5e99478baa",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-10-27T10:52:46Z",
    "title_canon_sha256": "151c1d734dad073c0ad137f0d53e4dcaa736e8ba1683fecec547d3a9428e621a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2510.23206",
    "kind": "arxiv",
    "version": 1
  }
}