Pith Number

pith:2R45JODU

pith:2016:2R45JODUQL5BVCBHHICFBBXD52

not attested not anchored not stored refs pending

Experimental transmission of quantum digital signatures over 90-km of installed optical fiber using a differential phase shift quantum key distribution system

Erika Andersson, Gerald S. Buller, Kaoru Shimizu, Kiyoshi Tamaki, Masahide Sasaki, Masahiro Takeoka, Mikio Fujiwara, Robert J. Collins, Ryan Amiri, Toshimori Honjo

arxiv:1608.04220 v1 · 2016-08-15 · 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{2R45JODUQL5BVCBHHICFBBXD52}

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	2026-05-18T01:01:30.906237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d479d4b87482fa1a88273a045086e3ee9ca4f37bb0f16fa86a1dd7ef89f44c4d

Aliases

arxiv: 1608.04220 · arxiv_version: 1608.04220v1 · doi: 10.48550/arxiv.1608.04220 · pith_short_12: 2R45JODUQL5B · pith_short_16: 2R45JODUQL5BVCBH · pith_short_8: 2R45JODU

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/2R45JODUQL5BVCBHHICFBBXD52 \
  | 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: d479d4b87482fa1a88273a045086e3ee9ca4f37bb0f16fa86a1dd7ef89f44c4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bf9e72abad30b165a288af6b52e0f359795cd3617f4f107a5371ac1ba8122e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2016-08-15T09:47:20Z",
    "title_canon_sha256": "165c040bd8f4e33515b56ad4e1f8bd800c147dcef9295809a1cd635b223dcebc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.04220",
    "kind": "arxiv",
    "version": 1
  }
}