Pith Number

pith:QWPBHQS3

pith:2000:QWPBHQS3MYU5HPIFAY4IKA6LWB

not attested not anchored not stored refs pending

Quantum Codes for Controlling Coherent Evolution

David G. Cory, Timothy F. Havel, Yehuda Sharf

arxiv:quant-ph/0004029 v2 · 2000-04-07 · 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{QWPBHQS3MYU5HPIFAY4IKA6LWB}

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	2026-07-04T16:22:19.919965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

859e13c25b6629d3bd0506388503cbb056d93f0bac5114bf9eaf1f3792251253

Aliases

arxiv: quant-ph/0004029 · arxiv_version: quant-ph/0004029v2 · doi: 10.48550/arxiv.quant-ph/0004029 · pith_short_12: QWPBHQS3MYU5 · pith_short_16: QWPBHQS3MYU5HPIF · pith_short_8: QWPBHQS3

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/QWPBHQS3MYU5HPIFAY4IKA6LWB \
  | 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: 859e13c25b6629d3bd0506388503cbb056d93f0bac5114bf9eaf1f3792251253

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88991d8ae9cb18a34cd10dbec29a78125c545ede387b736f86fc71555f254e31",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2000-04-07T01:11:06Z",
    "title_canon_sha256": "72c02ef69a4c44cc49c78b913ad95ae4211d900f964c466db54a971dfd77b3f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0004029",
    "kind": "arxiv",
    "version": 2
  }
}