Pith Number

pith:XC25YUDT

pith:2021:XC25YUDTU6DL2C4CZ2LLH5PFJ3

not attested not anchored not stored refs pending

Overcoming the rate-distance limit of device-independent quantum key distribution

Bing-Hong Li, Hua-Lei Yin, Wen-Bo Liu, Xiao-Yu Cao, Yuan-Mei Xie, Yu-Shuo Lu, Zeng-Bing Chen

arxiv:2103.17135 v2 · 2021-03-31 · 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{XC25YUDTU6DL2C4CZ2LLH5PFJ3}

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	2026-07-05T02:28:44.275412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8b5dc5073a786bd0b82ce96b3f5e54edd83bc67dc95edd4b3adaf2a85c28183

Aliases

arxiv: 2103.17135 · arxiv_version: 2103.17135v2 · doi: 10.48550/arxiv.2103.17135 · pith_short_12: XC25YUDTU6DL · pith_short_16: XC25YUDTU6DL2C4C · pith_short_8: XC25YUDT

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/XC25YUDTU6DL2C4CZ2LLH5PFJ3 \
  | 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: b8b5dc5073a786bd0b82ce96b3f5e54edd83bc67dc95edd4b3adaf2a85c28183

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8804e3b7a20ac4a47e3d3796d4394e4ac40c3169adcd67b87b0d3f109479a84",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-03-31T14:58:46Z",
    "title_canon_sha256": "458bc89a9df187a0bfdc4d1449d1369337af994638e3d04142eadd082b6ed33b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.17135",
    "kind": "arxiv",
    "version": 2
  }
}