Pith Number

pith:N4FAPQN6

pith:2018:N4FAPQN66CXKVEZNI5HRG3ZIDE

not attested not anchored not stored refs pending

Exploring circular polarization in the CMB due to conventional sources of cosmic birefringence

Christopher M. Hirata, Paulo Montero-Camacho

arxiv:1803.04505 v2 · 2018-03-12 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N4FAPQN66CXKVEZNI5HRG3ZIDE}

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	2026-05-18T00:06:56.219532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f0a07c1bef0aeaa932d474f136f281918fc710e18cae3259ed51eff651c2f1c

Aliases

arxiv: 1803.04505 · arxiv_version: 1803.04505v2 · doi: 10.48550/arxiv.1803.04505 · pith_short_12: N4FAPQN66CXK · pith_short_16: N4FAPQN66CXKVEZN · pith_short_8: N4FAPQN6

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/N4FAPQN66CXKVEZNI5HRG3ZIDE \
  | 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: 6f0a07c1bef0aeaa932d474f136f281918fc710e18cae3259ed51eff651c2f1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "207de0a4ed8af708b74e06eabd6315d811ce42b3b785f7df712283ab72ef6f82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-03-12T20:11:55Z",
    "title_canon_sha256": "df2a2525f7cd6b634c0d89b8c9a18d5e398a84b99bf9198fde4053e0dadaf357"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.04505",
    "kind": "arxiv",
    "version": 2
  }
}