Pith Number

pith:IHFR4CPM

pith:2024:IHFR4CPM4XEPZAEDFWJ6UBNJZX

not attested not anchored not stored refs pending

The Space-Time Cost of Purifying Quantum Computations

Mark Zhandry

arxiv:2401.07974 v1 · 2024-01-15 · quant-ph · cs.CC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IHFR4CPM4XEPZAEDFWJ6UBNJZX}

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	2026-07-05T08:54:06.291649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41cb1e09ece5c8fc80832d93ea05a9cdea7033adb4039926f29162e43c2779f4

Aliases

arxiv: 2401.07974 · arxiv_version: 2401.07974v1 · doi: 10.48550/arxiv.2401.07974 · pith_short_12: IHFR4CPM4XEP · pith_short_16: IHFR4CPM4XEPZAED · pith_short_8: IHFR4CPM

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/IHFR4CPM4XEPZAEDFWJ6UBNJZX \
  | 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: 41cb1e09ece5c8fc80832d93ea05a9cdea7033adb4039926f29162e43c2779f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26eab4948e06fbda23243af77d2e40def698a642fc87199c472c3d5fd25fa470",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2024-01-15T21:38:02Z",
    "title_canon_sha256": "18f023549fdb365fd0be714467fd511a1ede80be7e9ac90a4b6cb4acafae9ac7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.07974",
    "kind": "arxiv",
    "version": 1
  }
}