Pith Number

pith:Z4U6YYWD

pith:2026:Z4U6YYWDZY2DFVMNWH2QBXU4EN

not attested not anchored not stored refs pending

Spectroscopic redshifts of selected flat-spectrum radio sources I

Alberto Floris, Andreas Zezas, Avinash Kumar, Carolina Casadio, Dmitry Blinov, Elias Kyritsis, Valentina Missaglia, Vangelis Pantoulas

arxiv:2607.04959 v1 · 2026-07-06 · astro-ph.CO · 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{Z4U6YYWDZY2DFVMNWH2QBXU4EN}

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	2026-07-07T02:20:15.289661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf29ec62c3ce3432d58db1f500de9c237c18fcc2c3cc9fcff1602274a5648540

Aliases

arxiv: 2607.04959 · arxiv_version: 2607.04959v1 · doi: 10.48550/arxiv.2607.04959 · pith_short_12: Z4U6YYWDZY2D · pith_short_16: Z4U6YYWDZY2DFVMN · pith_short_8: Z4U6YYWD

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/Z4U6YYWDZY2DFVMNWH2QBXU4EN \
  | 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: cf29ec62c3ce3432d58db1f500de9c237c18fcc2c3cc9fcff1602274a5648540

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66f08e4760f1b813d5bf538c8c7981f4fb07bcf0d8b50423877de8cfa8f03334",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-07-06T11:43:01Z",
    "title_canon_sha256": "5f1a79855a5b95aad401c19228ab9b84eb8e077e8fbc14d551b4293f5d601b74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.04959",
    "kind": "arxiv",
    "version": 1
  }
}