Pith Number

pith:UY4CIXG3

pith:2021:UY4CIXG3BTSMSRWVCPXFH3SLIL

not attested not anchored not stored refs pending

Long-distance twin-field quantum key distribution with entangled sources

Bing-Hong Li, Chen-Long Li, Chen-Xun Weng, Hua-Lei Yin, Yuan-Mei Xie, Zeng-Bing Chen, Zhao Li

arxiv:2111.03775 v1 · 2021-11-06 · quant-ph · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UY4CIXG3BTSMSRWVCPXFH3SLIL}

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	2026-07-05T03:29:31.561961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a638245cdb0ce4c946d513ee53ee4b42ef84a41dd1d86cc12c8f47e7943fc821

Aliases

arxiv: 2111.03775 · arxiv_version: 2111.03775v1 · doi: 10.48550/arxiv.2111.03775 · pith_short_12: UY4CIXG3BTSM · pith_short_16: UY4CIXG3BTSMSRWV · pith_short_8: UY4CIXG3

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/UY4CIXG3BTSMSRWVCPXFH3SLIL \
  | 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: a638245cdb0ce4c946d513ee53ee4b42ef84a41dd1d86cc12c8f47e7943fc821

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef358941bcf52bbd784e4690a405213db05f8fcd089dd1fdabf224189e148151",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-11-06T02:01:42Z",
    "title_canon_sha256": "3324bbff5a4c4f6cc82cfb32b512f0f6656c4d5cb824d7d0cf800785d2f990ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.03775",
    "kind": "arxiv",
    "version": 1
  }
}