Pith Number

pith:QURYZPHW

pith:1994:QURYZPHWEXUOJYCZSJD4KP5MUQ

not attested not anchored not stored refs pending

Small-Scale Cosmic Microwave Background Anisotropies as a Probe of the Geometry of the Universe

David N. Spergel, Marc Kamionkowski, Naoshi Sugiyama

arxiv:astro-ph/9401003 v1 · 1994-01-04 · astro-ph · 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{QURYZPHWEXUOJYCZSJD4KP5MUQ}

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.

Cited by

1 paper in Pith

Gravitational waves, CMB polarization, and the Hubble tension

Receipt and verification

First computed	2026-07-04T15:56:02.683636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85238cbcf625e8e4e0599247c53faca43d0bff56870c457b0723e0112b3b08e5

Aliases

arxiv: astro-ph/9401003 · arxiv_version: astro-ph/9401003v1 · doi: 10.48550/arxiv.astro-ph/9401003 · pith_short_12: QURYZPHWEXUO · pith_short_16: QURYZPHWEXUOJYCZ · pith_short_8: QURYZPHW

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/QURYZPHWEXUOJYCZSJD4KP5MUQ \
  | 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: 85238cbcf625e8e4e0599247c53faca43d0bff56870c457b0723e0112b3b08e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d2baafb289cab79ff87a4210b70eb5222e4dc6b60632f78e95b68d6e4d934e2",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-01-04T04:43:27Z",
    "title_canon_sha256": "cbf93ec7eae02b0b7a20ef8cd8f590fc8e1f0a717fb47920c891caf4e5e4a5c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9401003",
    "kind": "arxiv",
    "version": 1
  }
}