Pith Number

pith:NW6RZTZ7

pith:2013:NW6RZTZ7HAOB3BPI2SZ2W4EFLF

not attested not anchored not stored refs pending

An improved upper limit to the CMB circular polarization at large angular scales

A. Bau', A. De Lucia, A. Passerini, D. Minelli, F. Cavaliere, G. Boella, G. Sironi, M. Gervasi, R. Mainini, S. Banfi

arxiv:1307.6090 v2 · 2013-07-23 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NW6RZTZ7HAOB3BPI2SZ2W4EFLF}

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

Probing Axion-Photon conversion via circular polarization imprints in the CMB $V$-mode observations

Receipt and verification

First computed	2026-05-18T03:14:17.000464Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6dbd1ccf3f381c1d85e8d4b3ab70855965914845f997aa940a2fdb9a13ed8d79

Aliases

arxiv: 1307.6090 · arxiv_version: 1307.6090v2 · doi: 10.48550/arxiv.1307.6090 · pith_short_12: NW6RZTZ7HAOB · pith_short_16: NW6RZTZ7HAOB3BPI · pith_short_8: NW6RZTZ7

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/NW6RZTZ7HAOB3BPI2SZ2W4EFLF \
  | 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: 6dbd1ccf3f381c1d85e8d4b3ab70855965914845f997aa940a2fdb9a13ed8d79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05dd92ab38b5b0d393f33bdbfdb91bf727fb85a495531caed7affd0ea9fa9916",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-23T14:11:56Z",
    "title_canon_sha256": "07a9753c0b279934344b147f1f684bfa585627480bb00ca76200d55ea098ecde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6090",
    "kind": "arxiv",
    "version": 2
  }
}