Pith Number

pith:MUWFFKYF

pith:2026:MUWFFKYFAVT4X4EHJXFZ55PIJJ

not attested not anchored not stored refs pending

Quantum key distribution over a 2 km free-space channel with a high secure key rate

Dong-Gil Im, Dongkyu Kim, Jisu Kim, Jonguk Choi, Kyungdeuk Park, Yonggi Jo, Yong Sup Ihn

arxiv:2607.24118 v1 · 2026-07-27 · quant-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{MUWFFKYFAVT4X4EHJXFZ55PIJJ}

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	2026-07-28T01:23:46.092326Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

652c52ab050567cbf0874dcb9ef5e84a5bedc89d085810275a524eac2666340a

Aliases

arxiv: 2607.24118 · arxiv_version: 2607.24118v1 · doi: 10.48550/arxiv.2607.24118 · pith_short_12: MUWFFKYFAVT4 · pith_short_16: MUWFFKYFAVT4X4EH · pith_short_8: MUWFFKYF

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/MUWFFKYFAVT4X4EHJXFZ55PIJJ \
  | 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: 652c52ab050567cbf0874dcb9ef5e84a5bedc89d085810275a524eac2666340a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac13685e6a95497667e18709eb69972b5b752975e6b408529fcd572bbf8ca724",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-27T07:59:17Z",
    "title_canon_sha256": "77c6ae5ab1263dba86cf9b822e2f5986a050cbd6e08bc4af9fd3c4d8d7fc8d0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.24118",
    "kind": "arxiv",
    "version": 1
  }
}