Pith Number

pith:UGB3LMQL

pith:2017:UGB3LMQLBPRVECLALLMO3RY5R3

not attested not anchored not stored refs pending

Diffraction-free space-time beams

Ayman F. Abouraddy, H. Esat Kondakci

arxiv:1707.03931 v1 · 2017-07-12 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UGB3LMQLBPRVECLALLMO3RY5R3}

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	2026-05-18T00:31:35.779282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a183b5b20b0be35209605ad8edc71d8ec0fd4713764efce91dd19eed59f57216

Aliases

arxiv: 1707.03931 · arxiv_version: 1707.03931v1 · doi: 10.48550/arxiv.1707.03931 · pith_short_12: UGB3LMQLBPRV · pith_short_16: UGB3LMQLBPRVECLA · pith_short_8: UGB3LMQL

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/UGB3LMQLBPRVECLALLMO3RY5R3 \
  | 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: a183b5b20b0be35209605ad8edc71d8ec0fd4713764efce91dd19eed59f57216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d07567953ff6239498bc6b295da87d44f955b0ce466c93e3d97c143449ae6d2f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-07-12T23:12:15Z",
    "title_canon_sha256": "bc03201ba8b336b8647dfa4ea1247ea2f58d558a6c1e15153b3f2c8c124bd12c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.03931",
    "kind": "arxiv",
    "version": 1
  }
}