Pith Number

pith:QJEROGJF

pith:2025:QJEROGJFPRSDGKVGOQ2DHXHRJQ

not attested not anchored not stored refs pending

Constraints on Anisotropic Cosmic Birefringence from CMB B-mode Polarization

A. I. Lonappan, B. Keating, K. Arnold

arxiv:2504.13154 v3 · 2025-04-17 · astro-ph.CO · gr-qc · 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{QJEROGJFPRSDGKVGOQ2DHXHRJQ}

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	2026-07-05T11:27:29.458708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82491719257c64332aa6743433dcf14c279b34038db6860beafe99252c6991f1

Aliases

arxiv: 2504.13154 · arxiv_version: 2504.13154v3 · doi: 10.48550/arxiv.2504.13154 · pith_short_12: QJEROGJFPRSD · pith_short_16: QJEROGJFPRSDGKVG · pith_short_8: QJEROGJF

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/QJEROGJFPRSDGKVGOQ2DHXHRJQ \
  | 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: 82491719257c64332aa6743433dcf14c279b34038db6860beafe99252c6991f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84dc8d4bf954639f32fc31cfe4d1814d889030ac3dfd5adf927b9062f0bea245",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2025-04-17T17:56:23Z",
    "title_canon_sha256": "182c17114c38a1767aabdd2ffc6093cb715adde13f26cf767e3ecc84be4b0d2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13154",
    "kind": "arxiv",
    "version": 3
  }
}