Pith Number

pith:2DIAPFGT

pith:2002:2DIAPFGTHB7KAELTO6KDX2MIKW

not attested not anchored not stored refs pending

Secure direct communication using entanglement

Kim Bostroem

arxiv:quant-ph/0203064 v2 · 2002-03-14 · 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{2DIAPFGTHB7KAELTO6KDX2MIKW}

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	2026-05-18T03:24:20.373685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0d00794d3387ea0117377943be9885593e608a6fb1ad30e2895c23d92148bb8

Aliases

arxiv: quant-ph/0203064 · arxiv_version: quant-ph/0203064v2 · doi: 10.48550/arxiv.quant-ph/0203064 · pith_short_12: 2DIAPFGTHB7K · pith_short_16: 2DIAPFGTHB7KAELT · pith_short_8: 2DIAPFGT

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/2DIAPFGTHB7KAELTO6KDX2MIKW \
  | 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: d0d00794d3387ea0117377943be9885593e608a6fb1ad30e2895c23d92148bb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f463a8adfe2a888ec044fa2a8eee631bc56539258f43e1f49f8db2e5db4e27c2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-03-14T19:01:30Z",
    "title_canon_sha256": "6c97b08760e2e7984ffce9f4d13dddcf55864e886c5d9290c1691609ce261412"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0203064",
    "kind": "arxiv",
    "version": 2
  }
}