Pith Number

pith:32HJ77KA

pith:2009:32HJ77KAMSDPH3JF5MWJAXEBGA

not attested not anchored not stored refs pending

Optimal Axis Compensation in Quantum Key Distribution Protocols over Unital Channels

Ryutaroh Matsumoto, Shun Watanabe, Tomohiko Uyematsu

arxiv:0904.4083 v1 · 2009-04-27 · 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{32HJ77KAMSDPH3JF5MWJAXEBGA}

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	2026-05-18T02:28:05.721907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de8e9ffd406486f3ed25eb2c905c813039d6be955e5ceb7dbce3e19e1b43950d

Aliases

arxiv: 0904.4083 · arxiv_version: 0904.4083v1 · doi: 10.48550/arxiv.0904.4083 · pith_short_12: 32HJ77KAMSDP · pith_short_16: 32HJ77KAMSDPH3JF · pith_short_8: 32HJ77KA

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/32HJ77KAMSDPH3JF5MWJAXEBGA \
  | 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: de8e9ffd406486f3ed25eb2c905c813039d6be955e5ceb7dbce3e19e1b43950d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4135a8e34d4d6eab27154247d62fc3c8fbdb85aa07dfb62800999b93beafc0a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-04-27T04:47:16Z",
    "title_canon_sha256": "3bd8bc7d7110ee4094638522d1b40a285aacbcf0f285eb6ee8fba9fde4637a4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4083",
    "kind": "arxiv",
    "version": 1
  }
}