Pith Number

pith:I3FHR4QD

pith:2012:I3FHR4QDHUOTZ5VDEXQK4QCGRU

not attested not anchored not stored refs pending

Distributed super dense coding over noisy channels

Chiara Macchiavello, Dagmar Bruss, Hermann Kampermann, Zahra Shadman

arxiv:1203.1197 v1 · 2012-03-06 · 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{I3FHR4QDHUOTZ5VDEXQK4QCGRU}

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	2026-05-18T03:56:10.259073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46ca78f2033d1d3cf6a325e0ae40468d3f8776a4514627acaa4382a3dab5815d

Aliases

arxiv: 1203.1197 · arxiv_version: 1203.1197v1 · doi: 10.48550/arxiv.1203.1197 · pith_short_12: I3FHR4QDHUOT · pith_short_16: I3FHR4QDHUOTZ5VD · pith_short_8: I3FHR4QD

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/I3FHR4QDHUOTZ5VDEXQK4QCGRU \
  | 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: 46ca78f2033d1d3cf6a325e0ae40468d3f8776a4514627acaa4382a3dab5815d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9048fe815231b6f614be3b55a32315d80a07c5f75e0ebe35ce7ff92b4f0fe860",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-03-06T13:45:32Z",
    "title_canon_sha256": "eaea85b19f0f5e5dd7bfc8b32ebd5e3c66bf44bdcc49210399b3eac289f374e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1197",
    "kind": "arxiv",
    "version": 1
  }
}