Pith Number

pith:HABH54LB

pith:2009:HABH54LBSA3O5MYABWJPBTCMO3

not attested not anchored not stored refs pending

Quantum state restoration and single-copy tomography

Andrew Lutomirski, Avinatan Hassidim, Daniel Nagaj, David Gosset, Edward Farhi, Peter Shor

arxiv:0912.3823 v2 · 2009-12-21 · 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{HABH54LBSA3O5MYABWJPBTCMO3}

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	2026-05-18T04:22:31.981078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38027ef1619036eeb3000d92f0cc4c76cf45f203031ce1433c95a89f244c7cc4

Aliases

arxiv: 0912.3823 · arxiv_version: 0912.3823v2 · doi: 10.48550/arxiv.0912.3823 · pith_short_12: HABH54LBSA3O · pith_short_16: HABH54LBSA3O5MYA · pith_short_8: HABH54LB

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/HABH54LBSA3O5MYABWJPBTCMO3 \
  | 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: 38027ef1619036eeb3000d92f0cc4c76cf45f203031ce1433c95a89f244c7cc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "533813249255da96bea1c1ac7598f8ab5186eaf69168d7d65b8ab6ffc382fc7a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-12-21T03:22:17Z",
    "title_canon_sha256": "d8aab480bc437de0d9af1afef8a559b7e33473c071ad86c32b074e5ad5ca385a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3823",
    "kind": "arxiv",
    "version": 2
  }
}