Pith Number

pith:A2JPR2YN

pith:2019:A2JPR2YNISX2Y4SER55K2G5I5X

not attested not anchored not stored refs pending

Characterization of an underwater channel for quantum communications in the Ottawa River

Alicia Sit, Benjamin J. Sussman, Duncan England, Ebrahim Karimi, Felix Hufnagel, Florence Grenapin, Fr\'ed\'eric Bouchard, Gerd Leuchs, Khabat Heshami, Robert W. Boyd, Yingwen Zhang

arxiv:1905.09437 v1 · 2019-05-23 · quant-ph · 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{A2JPR2YNISX2Y4SER55K2G5I5X}

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	2026-07-05T00:08:32.317913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0692f8eb0d44afac72448f7aad1ba8edee7e0718ceb5cb396ea518741b7abd93

Aliases

arxiv: 1905.09437 · arxiv_version: 1905.09437v1 · doi: 10.48550/arxiv.1905.09437 · pith_short_12: A2JPR2YNISX2 · pith_short_16: A2JPR2YNISX2Y4SE · pith_short_8: A2JPR2YN

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/A2JPR2YNISX2Y4SER55K2G5I5X \
  | 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: 0692f8eb0d44afac72448f7aad1ba8edee7e0718ceb5cb396ea518741b7abd93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0844dcc7ba46cfa7fc88d6077ec6044bd79837177ca1325688b6292f65be1043",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-05-23T02:16:47Z",
    "title_canon_sha256": "2846a1f73bd9f1164a699b843c28aa19e4cdec9211eebe73525ec3fc4d0e0989"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09437",
    "kind": "arxiv",
    "version": 1
  }
}