Pith Number

pith:OSB6CYQO

pith:2026:OSB6CYQOMQA53H4D7ISJDOMXXR

not attested not anchored not stored refs pending

Little red dots as a cosmological probe: constraining $H_0$ with quasi-periodic pulsations

Fengwu Sun, Kohei Inayoshi, Linhua Jiang, Masamune Oguri, Mingyu Li, Xiaojing Lin, Zijian Zhang

arxiv:2606.05281 v1 · 2026-06-03 · astro-ph.GA · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OSB6CYQOMQA53H4D7ISJDOMXXR}

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	2026-06-05T00:13:51.637536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7483e1620e6401dd9f83fa2491b997bc64ea68bc880df0a19ab158c18d316860

Aliases

arxiv: 2606.05281 · arxiv_version: 2606.05281v1 · doi: 10.48550/arxiv.2606.05281 · pith_short_12: OSB6CYQOMQA5 · pith_short_16: OSB6CYQOMQA53H4D · pith_short_8: OSB6CYQO

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/OSB6CYQOMQA53H4D7ISJDOMXXR \
  | 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: 7483e1620e6401dd9f83fa2491b997bc64ea68bc880df0a19ab158c18d316860

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70213bd44f97b86d3a448f2363154fd203a5a62d0720e8bdc1b33120ad89d409",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-03T18:00:00Z",
    "title_canon_sha256": "1466d298c70a1de8d6f74684e8c2ade6adffc4e5a6d95d0fc1691ac8922581c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05281",
    "kind": "arxiv",
    "version": 1
  }
}