Pith Number

pith:D2HSFSIH

pith:2021:D2HSFSIHB2YV2C34QECCC2BEYJ

not attested not anchored not stored refs pending

The radio spectral turnover of radio-loud quasars at $z>5$

Andreas Brunthaler, Axel Weiss, Chris L. Carilli, Dominik A. Riechers, Emmanuel Momjian, Fabian Walter, Huib T. Intema, Jeff Wagg, Karl M. Menten, Ran Wang, Yali Shao

arxiv:2112.03133 v1 · 2021-12-06 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D2HSFSIHB2YV2C34QECCC2BEYJ}

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	2026-07-05T04:07:28.802686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e8f22c9070eb15d0b7c8104216824c258a7729ecedb5e9c7cdd2ab9e7c31d52

Aliases

arxiv: 2112.03133 · arxiv_version: 2112.03133v1 · doi: 10.48550/arxiv.2112.03133 · pith_short_12: D2HSFSIHB2YV · pith_short_16: D2HSFSIHB2YV2C34 · pith_short_8: D2HSFSIH

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/D2HSFSIHB2YV2C34QECCC2BEYJ \
  | 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: 1e8f22c9070eb15d0b7c8104216824c258a7729ecedb5e9c7cdd2ab9e7c31d52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d8fced47990885b439e3cb14ec5c764bfb4537132524128aab5d9d827609ae5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-12-06T16:00:00Z",
    "title_canon_sha256": "7ab61567aebb2dc0c459d5d2a34899e5087493b6cf2dc9fe134e16c4b004a731"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.03133",
    "kind": "arxiv",
    "version": 1
  }
}