Pith Number

pith:QQI57JAD

pith:2019:QQI57JAD2HF3VJCAEAARYDU7V4

not attested not anchored not stored refs pending

Absolute calibration of the polarisation angle for future CMB B-mode experiments from current and future measurements of the Crab nebula

A. Mangilli, A. Ritacco, J. Aumont, J. F. Mac\'ias-P\'erez, N. Ponthieu

arxiv:1911.03164 v1 · 2019-11-08 · astro-ph.CO · astro-ph.GA · 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{QQI57JAD2HF3VJCAEAARYDU7V4}

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	2026-07-05T00:43:56.542532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8411dfa403d1cbbaa44020011c0e9faf33e0e01386290eb3f71bd9b94a7290e2

Aliases

arxiv: 1911.03164 · arxiv_version: 1911.03164v1 · doi: 10.48550/arxiv.1911.03164 · pith_short_12: QQI57JAD2HF3 · pith_short_16: QQI57JAD2HF3VJCA · pith_short_8: QQI57JAD

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/QQI57JAD2HF3VJCAEAARYDU7V4 \
  | 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: 8411dfa403d1cbbaa44020011c0e9faf33e0e01386290eb3f71bd9b94a7290e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b797785c07085b8c04c1c785ce45753a082f61877d4884502c350375be8ef53b",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-11-08T10:17:02Z",
    "title_canon_sha256": "62114536182f04a8e6b37fd0211d6637c54194b0e7cdd6a4f4a6a52d05fb14f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.03164",
    "kind": "arxiv",
    "version": 1
  }
}