Pith Number

pith:QQZ74D7F

pith:2015:QQZ74D7FNUJCSSGUXSQGTOLQYE

not attested not anchored not stored refs pending

Principal component analysis of the reionization history from Planck 2015 data

Rong-Gen Cai, Wei-Ming Dai, Zong-Kuan Guo

arxiv:1509.01501 v1 · 2015-09-04 · astro-ph.CO · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QQZ74D7FNUJCSSGUXSQGTOLQYE}

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	2026-05-18T01:24:06.518228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8433fe0fe56d122948d4bca069b970c10d92d99e3857ae0d12a244fb93e5be73

Aliases

arxiv: 1509.01501 · arxiv_version: 1509.01501v1 · doi: 10.48550/arxiv.1509.01501 · pith_short_12: QQZ74D7FNUJC · pith_short_16: QQZ74D7FNUJCSSGU · pith_short_8: QQZ74D7F

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/QQZ74D7FNUJCSSGUXSQGTOLQYE \
  | 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: 8433fe0fe56d122948d4bca069b970c10d92d99e3857ae0d12a244fb93e5be73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b47c3c17532658b0a420e6f8a4ca8d738ee2a9e2fe197305d11971dd65ae91ba",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-09-04T15:34:21Z",
    "title_canon_sha256": "14e73422d8fb3ea4bd5d7ce7a5e07da1ae2f0dcc60635c3916bbf999f385d81d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01501",
    "kind": "arxiv",
    "version": 1
  }
}