Pith Number

pith:PI4WVG3L

pith:2013:PI4WVG3L3LR6AGNVI7ELC3VMIT

not attested not anchored not stored refs pending

Certified quantum non-demolition measurement of a macroscopic material system

G.Colangelo, M.Napolitano, M.W.Mitchell, N.Behbood, R.J.Sewell

arxiv:1303.2490 v1 · 2013-03-11 · 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{PI4WVG3L3LR6AGNVI7ELC3VMIT}

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	2026-05-18T02:42:06.234826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a396a9b6bdae3e019b547c8b16eac44ce034eb6d92d5879e32a4a53d9394343

Aliases

arxiv: 1303.2490 · arxiv_version: 1303.2490v1 · doi: 10.48550/arxiv.1303.2490 · pith_short_12: PI4WVG3L3LR6 · pith_short_16: PI4WVG3L3LR6AGNV · pith_short_8: PI4WVG3L

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/PI4WVG3L3LR6AGNVI7ELC3VMIT \
  | 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: 7a396a9b6bdae3e019b547c8b16eac44ce034eb6d92d5879e32a4a53d9394343

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75a6131e50e723bd40e240d6eee7f00cc489c5695ef6be6c3ea212b0c5973d2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-03-11T11:23:20Z",
    "title_canon_sha256": "3bf513e5524875f70a7c311b0e428053254decbac4a64dfe0c8ffbd37179ee09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.2490",
    "kind": "arxiv",
    "version": 1
  }
}