Pith Number

pith:IWT4MQW7

pith:2018:IWT4MQW7NMTJZHIHLZPR2YDQ7E

not attested not anchored not stored refs pending

Impact of a primordial magnetic field on cosmic microwave background $B$ modes with weak lensing

2) ((1) Ibaraki University, (2) National Astronomical Observatory of Japan), Dai G. Yamazaki (1

arxiv:1805.09903 v1 · 2018-05-24 · astro-ph.CO · astro-ph.GA · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IWT4MQW7NMTJZHIHLZPR2YDQ7E}

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	2026-05-18T00:14:58.843550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45a7c642df6b269c9d075e5f1d6070f90be6999b0f4c572ca08f8c9d96f7bd19

Aliases

arxiv: 1805.09903 · arxiv_version: 1805.09903v1 · doi: 10.48550/arxiv.1805.09903 · pith_short_12: IWT4MQW7NMTJ · pith_short_16: IWT4MQW7NMTJZHIH · pith_short_8: IWT4MQW7

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/IWT4MQW7NMTJZHIHLZPR2YDQ7E \
  | 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: 45a7c642df6b269c9d075e5f1d6070f90be6999b0f4c572ca08f8c9d96f7bd19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d1881150239e16c5b09ccce16acca3e18745227c20f0f1b6a38576f5097b80c",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-05-24T21:15:17Z",
    "title_canon_sha256": "9d89faf2fb177c466b7e6bb6b918018892139807c38fdd4f9e83f3c7dab4d6cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09903",
    "kind": "arxiv",
    "version": 1
  }
}