Pith Number

pith:5TKWPBTO

pith:2025:5TKWPBTOSF6E37KTUMD7J4CPMP

not attested not anchored not stored refs pending

Estimating constraints on cosmological parameters via the canonical and the differential redshift drift with SKA HI 21-cm observations

Guangyuan Song, Jiangang Kang, Ming Zhu, Tong Jie Zhang

arxiv:2504.13583 v1 · 2025-04-18 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5TKWPBTOSF6E37KTUMD7J4CPMP}

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	2026-07-05T11:06:30.711646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecd567866e917c4dfd53a307f4f04f63f118557227c9dd7a13e3dcef5d81c896

Aliases

arxiv: 2504.13583 · arxiv_version: 2504.13583v1 · doi: 10.48550/arxiv.2504.13583 · pith_short_12: 5TKWPBTOSF6E · pith_short_16: 5TKWPBTOSF6E37KT · pith_short_8: 5TKWPBTO

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/5TKWPBTOSF6E37KTUMD7J4CPMP \
  | 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: ecd567866e917c4dfd53a307f4f04f63f118557227c9dd7a13e3dcef5d81c896

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35d96c1db59a991988d2f497506ea255fde35ccc75b7d4086220cc960c5b9302",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2025-04-18T09:36:32Z",
    "title_canon_sha256": "ce9f7ba7de2a397cb06063444f8f5279cd399f8d5eadc922abe895deae826c22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13583",
    "kind": "arxiv",
    "version": 1
  }
}