Pith Number

pith:IDROL2PM

pith:2020:IDROL2PMBZNKM62LBGJDEADMQY

not attested not anchored not stored refs pending

Planck 2018 constraints on anisotropic birefringence and its cross-correlation with CMB anisotropy

Alessandro Gruppuso, Diego Molinari, Luca Pagano, Paolo Natoli

arxiv:2008.10334 v2 · 2020-08-24 · 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{IDROL2PMBZNKM62LBGJDEADMQY}

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	2026-07-05T01:57:53.784368Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40e2e5e9ec0e5aa67b4b099232006c8617bb52a39bd7766a6fb343f667d5dea1

Aliases

arxiv: 2008.10334 · arxiv_version: 2008.10334v2 · doi: 10.48550/arxiv.2008.10334 · pith_short_12: IDROL2PMBZNK · pith_short_16: IDROL2PMBZNKM62L · pith_short_8: IDROL2PM

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/IDROL2PMBZNKM62LBGJDEADMQY \
  | 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: 40e2e5e9ec0e5aa67b4b099232006c8617bb52a39bd7766a6fb343f667d5dea1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "348b02a84179fb4816066062364ece112f35114cc17428c6e40c9f4cc18b8d51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-08-24T11:48:33Z",
    "title_canon_sha256": "1569ea2958b319997f38e924bec87454e0b628ecdbc97799d50aef47faca62ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.10334",
    "kind": "arxiv",
    "version": 2
  }
}