Pith Number

pith:L6VNDGGY

pith:2026:L6VNDGGYA24BIBF3BF3SM2657D

not attested not anchored not stored refs pending

Security of Quantum Conference Key Agreement with Two-Way Classical Communication

Koichi Takasugi, Mori Watanabe, Shun Kawakami, Takuya Ikuta

arxiv:2607.04538 v1 · 2026-07-05 · 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{L6VNDGGYA24BIBF3BF3SM2657D}

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	2026-07-07T02:19:23.757062Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5faad198d806b81404bb0977266bddf8f322529dcfaec7d1e62f8e65ed2282e3

Aliases

arxiv: 2607.04538 · arxiv_version: 2607.04538v1 · doi: 10.48550/arxiv.2607.04538 · pith_short_12: L6VNDGGYA24B · pith_short_16: L6VNDGGYA24BIBF3 · pith_short_8: L6VNDGGY

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/L6VNDGGYA24BIBF3BF3SM2657D \
  | 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: 5faad198d806b81404bb0977266bddf8f322529dcfaec7d1e62f8e65ed2282e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "765215faef36a1a58a60257eb69a359def529d249f6bc4aaa1587b190df07c9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-07-05T22:57:30Z",
    "title_canon_sha256": "d37ae0336a7d54ca8aa283c192471f59123a60dcc9626509d0bcd0c42452a9ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.04538",
    "kind": "arxiv",
    "version": 1
  }
}