Pith Number

pith:FJLNKLFU

pith:1999:FJLNKLFUC55BMW5Y42LPGLTMTL

not attested not anchored not stored refs pending

Microwave background polarization in cosmological models

Anthony Challinor

arxiv:astro-ph/9911481 v2 · 1999-11-26 · astro-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{FJLNKLFUC55BMW5Y42LPGLTMTL}

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	2026-07-04T16:11:56.587633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a56d52cb4177a165bb8e696f32e6c9aee6c383404a3cfb6a59bb1f0fb0f59b3

Aliases

arxiv: astro-ph/9911481 · arxiv_version: astro-ph/9911481v2 · doi: 10.48550/arxiv.astro-ph/9911481 · pith_short_12: FJLNKLFUC55B · pith_short_16: FJLNKLFUC55BMW5Y · pith_short_8: FJLNKLFU

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/FJLNKLFUC55BMW5Y42LPGLTMTL \
  | 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: 2a56d52cb4177a165bb8e696f32e6c9aee6c383404a3cfb6a59bb1f0fb0f59b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25537e23c62addafefc2d01d1fd2c98a4d0ab59fd4289c0c8ce43ce5cf4e735d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-26T14:29:09Z",
    "title_canon_sha256": "010a2df7de83c5b1b7416fa4a7602e1ea2662904893932f810e3f2676c181d80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911481",
    "kind": "arxiv",
    "version": 2
  }
}