Pith Number

pith:WWX5NLMF

pith:2015:WWX5NLMFNMMBLBRW4T2GYJIPR4

not attested not anchored not stored refs pending

Approaching the Heisenberg limit without single-particle detection

Emily Davis, Gregory Bentsen, Monika Schleier-Smith

arxiv:1508.04110 v2 · 2015-08-17 · 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{WWX5NLMFNMMBLBRW4T2GYJIPR4}

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	2026-05-18T01:21:31.512311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5afd6ad856b18158636e4f46c250f8f19704e157c6cb2d733dcf107ac935212

Aliases

arxiv: 1508.04110 · arxiv_version: 1508.04110v2 · doi: 10.48550/arxiv.1508.04110 · pith_short_12: WWX5NLMFNMMB · pith_short_16: WWX5NLMFNMMBLBRW · pith_short_8: WWX5NLMF

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/WWX5NLMFNMMBLBRW4T2GYJIPR4 \
  | 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: b5afd6ad856b18158636e4f46c250f8f19704e157c6cb2d733dcf107ac935212

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "507a5356a610d953b9eee6bbb16cbf3aa1a45d70103f1eef147e0ae4f628efd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-08-17T18:54:50Z",
    "title_canon_sha256": "fb8a18c5a06cdfa3e4e4f0cc9cc16dc9591bb2577dd1f21313c14fd2d1cddc5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04110",
    "kind": "arxiv",
    "version": 2
  }
}