Pith Number

pith:XDOVBI65

pith:2020:XDOVBI65L2SPZUAD4LWBLT6SX2

not attested not anchored not stored refs pending

Underwater quantum communication over a 30-meter flume tank

Alicia Sit, Benjamin J. Sussman, Duncan England, Ebrahim Karimi, Felix Hufnagel, Fr\'ed\'eric Bouchard, Khabat Heshami, Yingwen Zhang

arxiv:2004.04821 v1 · 2020-04-09 · 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{XDOVBI65L2SPZUAD4LWBLT6SX2}

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	2026-07-05T00:54:14.597824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8dd50a3dd5ea4fcd003e2ec15cfd2be8e3f6c1c69c5524e31158cce5d94b1d9

Aliases

arxiv: 2004.04821 · arxiv_version: 2004.04821v1 · doi: 10.48550/arxiv.2004.04821 · pith_short_12: XDOVBI65L2SP · pith_short_16: XDOVBI65L2SPZUAD · pith_short_8: XDOVBI65

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/XDOVBI65L2SPZUAD4LWBLT6SX2 \
  | 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: b8dd50a3dd5ea4fcd003e2ec15cfd2be8e3f6c1c69c5524e31158cce5d94b1d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03368a9ee3fae13f7587f9973080e22110750e4b04aabc7fb7ab85b2d94e4369",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-04-09T21:13:01Z",
    "title_canon_sha256": "5ed926f60fa2f3ccd619b3e7ff52880fe8450558a25b639bf5e5c7cd73290c7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.04821",
    "kind": "arxiv",
    "version": 1
  }
}