Pith Number

pith:54QJQQKF

pith:2013:54QJQQKF2IPCAISZQEAN34OPFC

not attested not anchored not stored refs pending

Efficient method for controlling the spatial coherence of a laser

Asher Friesem, Brandon Redding, Hui Cao, Micha Nixon, Nir Davidson

arxiv:1307.3361 v1 · 2013-07-12 · 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{54QJQQKF2IPCAISZQEAN34OPFC}

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	2026-05-18T01:48:51.191744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef20984145d21e2022598100ddf1cf288aadea3e9187d3d08144b146739748a4

Aliases

arxiv: 1307.3361 · arxiv_version: 1307.3361v1 · doi: 10.48550/arxiv.1307.3361 · pith_short_12: 54QJQQKF2IPC · pith_short_16: 54QJQQKF2IPCAISZ · pith_short_8: 54QJQQKF

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/54QJQQKF2IPCAISZQEAN34OPFC \
  | 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: ef20984145d21e2022598100ddf1cf288aadea3e9187d3d08144b146739748a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40924c7ebb3a1af6964d1f9b1d9aa2b40bed2e2075b5baba6b75ea24a1970653",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-07-12T08:27:37Z",
    "title_canon_sha256": "a6b564280eb86db849ea8a8b1052b339af0ce32df6c364e9d67f685ecae41075"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.3361",
    "kind": "arxiv",
    "version": 1
  }
}