Pith Number

pith:3AE33OBJ

pith:2026:3AE33OBJZJKG4TJGCWGQGEMFHT

not attested not anchored not stored refs pending

The X-ray-to-UV relation does not evolve in homogeneous quasar samples

A. Sacchi, A. Shlentsova, B. Trefoloni, C. Niccolai, E. Lusso, E. Nardini, G. Risaliti, M. Ralowski, M. Signorini

arxiv:2606.07730 v1 · 2026-06-05 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3AE33OBJZJKG4TJGCWGQGEMFHT}

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	2026-06-09T01:04:50.581905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d809bdb829ca546e4d26158d0311853cf2b6bde56e2eaf62fea1ff110e071d96

Aliases

arxiv: 2606.07730 · arxiv_version: 2606.07730v1 · doi: 10.48550/arxiv.2606.07730 · pith_short_12: 3AE33OBJZJKG · pith_short_16: 3AE33OBJZJKG4TJG · pith_short_8: 3AE33OBJ

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/3AE33OBJZJKG4TJGCWGQGEMFHT \
  | 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: d809bdb829ca546e4d26158d0311853cf2b6bde56e2eaf62fea1ff110e071d96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e88858f0123e0735c6626a64ed0a7075c94f0391e14eb91310db26c658f28555",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-06-05T17:53:58Z",
    "title_canon_sha256": "7e33057549c8553fb00fed8576ebfbba9ebf6253acb5c2957781a222f289da1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.07730",
    "kind": "arxiv",
    "version": 1
  }
}