Pith Number

pith:CHKPQRRR

pith:1998:CHKPQRRRG2EHE72LTRWXHOKHR5

not attested not anchored not stored refs pending

Experimental Quantum Error Correction

D. G. Cory, E. Knill, M. Price, R. Laflamme, S. S. Somaroo, T. F. Havel, W. H. Zurek, W. Mass

arxiv:quant-ph/9802018 v1 · 1998-02-06 · 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{CHKPQRRRG2EHE72LTRWXHOKHR5}

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	2026-07-04T16:10:27.891371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11d4f846313688727f4b9c6d73b9478f5feb8fbf6e490a5d5ada8bcc563fcc36

Aliases

arxiv: quant-ph/9802018 · arxiv_version: quant-ph/9802018v1 · doi: 10.48550/arxiv.quant-ph/9802018 · pith_short_12: CHKPQRRRG2EH · pith_short_16: CHKPQRRRG2EHE72L · pith_short_8: CHKPQRRR

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/CHKPQRRRG2EHE72LTRWXHOKHR5 \
  | 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: 11d4f846313688727f4b9c6d73b9478f5feb8fbf6e490a5d5ada8bcc563fcc36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33df11830eab6d2d0163fbcb860046e1cfacfbaf51593b43ef57067a2706d172",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1998-02-06T01:00:26Z",
    "title_canon_sha256": "f808acf4363f91df9a4ffa7658270c83f0ecd1f44321145c93b4fb2fba3dd381"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9802018",
    "kind": "arxiv",
    "version": 1
  }
}