Pith Number

pith:7DWY4RZ2

pith:2011:7DWY4RZ26Z74O3XZ3BTNFGKDHD

not attested not anchored not stored refs pending

Encoding many channels in the same frequency through radio vorticity: first experimental test

Anna Sponselli, Antonio Bianchini, Bo Thid\'e, Carlo G. Someda, Elettra Mari, Fabrizio Tamburini, Filippo Romanato, Luca Palmieri

arxiv:1107.2348 v2 · 2011-07-12 · physics.ins-det · astro-ph.IM · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7DWY4RZ26Z74O3XZ3BTNFGKDHD}

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	2026-05-18T02:01:19.534925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8ed8e473af67fc76ef9d866d2994338d63902a04a8b6d4ea118e99ea252f5e4

Aliases

arxiv: 1107.2348 · arxiv_version: 1107.2348v2 · doi: 10.48550/arxiv.1107.2348 · pith_short_12: 7DWY4RZ26Z74 · pith_short_16: 7DWY4RZ26Z74O3XZ · pith_short_8: 7DWY4RZ2

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/7DWY4RZ26Z74O3XZ3BTNFGKDHD \
  | 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: f8ed8e473af67fc76ef9d866d2994338d63902a04a8b6d4ea118e99ea252f5e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "458f3d834840f6fdb14fc3d5b03f0156a6ef6446c52650b895c92db8c1764cf8",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2011-07-12T17:02:35Z",
    "title_canon_sha256": "4310da2bcc2f9d35f63d701ae883412426e0282b6ac8ee5a7cd10adfa137a5af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2348",
    "kind": "arxiv",
    "version": 2
  }
}