Pith Number

pith:F6R4CB5J

pith:2009:F6R4CB5JICLYNPIXZFWBR6HRVM

not attested not anchored not stored refs pending

Fully automated entanglement-based quantum cryptography system for telecom fiber networks

Alexander Treiber, Andreas Poppe, Anton Zeilinger, Daniele Ferrini, Edwin Querasser, Hannes H\"ubel, Michael Hentschel, Thomas Lor\"unser, Thomas Matyus

arxiv:0901.2725 v2 · 2009-01-18 · 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{F6R4CB5JICLYNPIXZFWBR6HRVM}

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	2026-05-18T02:14:56.907607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fa3c107a9409786bd17c96c18f8f1ab095ce7d5151b1aebcc513ad7858f7c26

Aliases

arxiv: 0901.2725 · arxiv_version: 0901.2725v2 · doi: 10.48550/arxiv.0901.2725 · pith_short_12: F6R4CB5JICLY · pith_short_16: F6R4CB5JICLYNPIX · pith_short_8: F6R4CB5J

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/F6R4CB5JICLYNPIXZFWBR6HRVM \
  | 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: 2fa3c107a9409786bd17c96c18f8f1ab095ce7d5151b1aebcc513ad7858f7c26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5bdb6c60bf5470098f187d049b6b731902f70879a023426892e87af84c9551a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-01-18T19:04:53Z",
    "title_canon_sha256": "a4acea712320936b4828408d2f541d1f9c08c44f5cf66cd3f1331a553f38c608"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2725",
    "kind": "arxiv",
    "version": 2
  }
}