Pith Number

pith:FZ27KVEU

pith:2026:FZ27KVEUTOV3XAKCGIHC7QRDE6

not attested not anchored not stored refs pending

Black Hole Polarimetry III: Universal Polarization of Synchrotron Radiation at the Horizon

Alexandru Lupsasca, Andrew Chael, Eliot Quataert, George N. Wong, Zachary Gelles

arxiv:2606.12518 v1 · 2026-06-10 · astro-ph.HE · 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{FZ27KVEUTOV3XAKCGIHC7QRDE6}

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	2026-06-12T00:07:53.260785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e75f554949babbb8142320e2fc223279c868396f98edb05afa97034167b4d54

Aliases

arxiv: 2606.12518 · arxiv_version: 2606.12518v1 · doi: 10.48550/arxiv.2606.12518 · pith_short_12: FZ27KVEUTOV3 · pith_short_16: FZ27KVEUTOV3XAKC · pith_short_8: FZ27KVEU

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/FZ27KVEUTOV3XAKCGIHC7QRDE6 \
  | 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: 2e75f554949babbb8142320e2fc223279c868396f98edb05afa97034167b4d54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b27236c45b795ebbf0fb7a9004d11690ddcaeb9dbce5cefd765cc773d8d940b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-06-10T18:00:01Z",
    "title_canon_sha256": "39f04ccb8229166d1775a5cdaf7339d489c3ca3a0d2dc74756ef2c640e364ab6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.12518",
    "kind": "arxiv",
    "version": 1
  }
}