Pith Number

pith:P2O2ENQ5

pith:2018:P2O2ENQ5QLG4GCMKW2GYDZJEAN

not attested not anchored not stored refs pending

How difficult is it to prepare a quantum state?

Davide Girolami

arxiv:1808.01649 v2 · 2018-08-05 · 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{P2O2ENQ5QLG4GCMKW2GYDZJEAN}

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	2026-05-17T23:56:20.229262Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e9da2361d82cdc3098ab68d81e5240356f027ac1e01fd3270b2053e902167a0

Aliases

arxiv: 1808.01649 · arxiv_version: 1808.01649v2 · doi: 10.48550/arxiv.1808.01649 · pith_short_12: P2O2ENQ5QLG4 · pith_short_16: P2O2ENQ5QLG4GCMK · pith_short_8: P2O2ENQ5

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/P2O2ENQ5QLG4GCMKW2GYDZJEAN \
  | 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: 7e9da2361d82cdc3098ab68d81e5240356f027ac1e01fd3270b2053e902167a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78695d964c73d33e8009a1ddb47bc1fa9b1f961d1c941ca2cd0cfd91f15a9308",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-08-05T16:37:50Z",
    "title_canon_sha256": "c5cc7e440a7541a0ead007d2634a32ab70b00041604b7764cad1364e93898c23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01649",
    "kind": "arxiv",
    "version": 2
  }
}