Pith Number

pith:ZYBDLK3D

pith:2016:ZYBDLK3D2PDVLUIMSKQPQBCNEU

not attested not anchored not stored refs pending

Private states, quantum data hiding and the swapping of perfect secrecy

Matthias Christandl, Roberto Ferrara

arxiv:1609.04696 v3 · 2016-09-15 · 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{ZYBDLK3D2PDVLUIMSKQPQBCNEU}

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	2026-05-18T00:23:01.646666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce0235ab63d3c755d10c92a0f8044d2508195eaab5f00911b7bb5339aec176a8

Aliases

arxiv: 1609.04696 · arxiv_version: 1609.04696v3 · doi: 10.48550/arxiv.1609.04696 · pith_short_12: ZYBDLK3D2PDV · pith_short_16: ZYBDLK3D2PDVLUIM · pith_short_8: ZYBDLK3D

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/ZYBDLK3D2PDVLUIMSKQPQBCNEU \
  | 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: ce0235ab63d3c755d10c92a0f8044d2508195eaab5f00911b7bb5339aec176a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f29f15588e7b08e25052420f90645f7f46a6e035ca86d44cf5a37be1de412f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2016-09-15T15:18:47Z",
    "title_canon_sha256": "dc60757a2ace670047e4608a42b2c5cb3dfa37bb3aa743503efec0c2e9be80fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.04696",
    "kind": "arxiv",
    "version": 3
  }
}