Pith Number

pith:ZN4HJSHF

pith:2015:ZN4HJSHFYV3XHPQUTWMJHUSDCU

not attested not anchored not stored refs pending

Verifying the quantumness of a channel with an untrusted device

Matthew F. Pusey

arxiv:1502.03010 v2 · 2015-02-10 · 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{ZN4HJSHFYV3XHPQUTWMJHUSDCU}

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	2026-05-18T02:20:02.760695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb7874c8e5c57773be149d9893d2431502f475c5229ed3a04ad8b74adfec28df

Aliases

arxiv: 1502.03010 · arxiv_version: 1502.03010v2 · doi: 10.48550/arxiv.1502.03010 · pith_short_12: ZN4HJSHFYV3X · pith_short_16: ZN4HJSHFYV3XHPQU · pith_short_8: ZN4HJSHF

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/ZN4HJSHFYV3XHPQUTWMJHUSDCU \
  | 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: cb7874c8e5c57773be149d9893d2431502f475c5229ed3a04ad8b74adfec28df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "126d60a3aba1f6dbe185de0005d2a35be8dafa2e646cd9f27fe90b155c727d5b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-02-10T17:43:15Z",
    "title_canon_sha256": "08a950302962985b5a50adea286539af5b11c8ab5fb18f32fb2dd557f92d0afa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.03010",
    "kind": "arxiv",
    "version": 2
  }
}