Pith Number

pith:HOKUR3Y3

pith:2021:HOKUR3Y33QMK2NCPOMS2UQPIOF

not attested not anchored not stored refs pending

Implications of the Cosmic Birefringence Measurement for the Axion Dark Matter Search

Ippei Obata

arxiv:2108.02150 v2 · 2021-08-04 · astro-ph.CO · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HOKUR3Y33QMK2NCPOMS2UQPIOF}

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

Planck PR4 (NPIPE) map-space cosmic birefringence

Receipt and verification

First computed	2026-07-05T05:04:45.356750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b9548ef1bdc18ad344f7325aa41e87154ff4c49ac2905c7f8bbe5cbe0b40cd9

Aliases

arxiv: 2108.02150 · arxiv_version: 2108.02150v2 · doi: 10.48550/arxiv.2108.02150 · pith_short_12: HOKUR3Y33QMK · pith_short_16: HOKUR3Y33QMK2NCP · pith_short_8: HOKUR3Y3

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/HOKUR3Y33QMK2NCPOMS2UQPIOF \
  | 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: 3b9548ef1bdc18ad344f7325aa41e87154ff4c49ac2905c7f8bbe5cbe0b40cd9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0540d11427711ed72b3dd30617e41488eb3a83b26acef564b351ce9570a0165a",
    "cross_cats_sorted": [
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-08-04T16:30:29Z",
    "title_canon_sha256": "823391b3ba48f57c721e983b1d29e88f1a029d49811b51122d42b9dbd562dc81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.02150",
    "kind": "arxiv",
    "version": 2
  }
}