Pith Number

pith:DYELYSAT

pith:2021:DYELYSATUDYS7PJQNE3YVQPBAZ

not attested not anchored not stored refs pending

Cosmic birefringence tomography and calibration-independence with reionization signals in the CMB

Blake D. Sherwin, Toshiya Namikawa

arxiv:2108.09287 v1 · 2021-08-20 · 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{DYELYSATUDYS7PJQNE3YVQPBAZ}

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	2026-07-05T06:18:08.238462Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e08bc4813a0f12fbd3069378ac1e1064170a3cebab4b145a5933aea31efecee

Aliases

arxiv: 2108.09287 · arxiv_version: 2108.09287v1 · doi: 10.48550/arxiv.2108.09287 · pith_short_12: DYELYSATUDYS · pith_short_16: DYELYSATUDYS7PJQ · pith_short_8: DYELYSAT

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/DYELYSATUDYS7PJQNE3YVQPBAZ \
  | 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: 1e08bc4813a0f12fbd3069378ac1e1064170a3cebab4b145a5933aea31efecee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "caeee4656866efcc15b76f8db07fc35d5e4ae6675a0ea0a412aabbfe00485649",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-08-20T17:22:15Z",
    "title_canon_sha256": "fdd0b27e1d4b65027e6913ab3068b13c24f7bd90feb3806e547027e355719a23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.09287",
    "kind": "arxiv",
    "version": 1
  }
}