Pith Number

pith:TQEQBKUA

pith:2024:TQEQBKUA4HT76QSOLLRBOBRGK5

not attested not anchored not stored refs pending

The Composite Spectral Energy Distribution of Quasars is Surprisingly Universal Since Cosmic Noon

Zhen-Yi Cai (USTC)

arxiv:2411.13208 v1 · 2024-11-20 · astro-ph.GA · astro-ph.CO · 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{TQEQBKUA4HT76QSOLLRBOBRGK5}

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	2026-07-05T09:38:06.646732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c0900aa80e1e7ff424e5ae2170626575c167429085da81eefba2bad85259e53

Aliases

arxiv: 2411.13208 · arxiv_version: 2411.13208v1 · doi: 10.48550/arxiv.2411.13208 · pith_short_12: TQEQBKUA4HT7 · pith_short_16: TQEQBKUA4HT76QSO · pith_short_8: TQEQBKUA

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/TQEQBKUA4HT76QSOLLRBOBRGK5 \
  | 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: 9c0900aa80e1e7ff424e5ae2170626575c167429085da81eefba2bad85259e53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94ae2c9a15382324503833ab4afab8b7bfb9da8751cb9db96c3747717cc51fa4",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2024-11-20T11:17:46Z",
    "title_canon_sha256": "6db65d329e4634dcd771ac351294442f92dd9946048e4ca7bb1c34414445b599"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2411.13208",
    "kind": "arxiv",
    "version": 1
  }
}