Pith Number

pith:FYZOTCV2

pith:2021:FYZOTCV2XDXXMZWCL3N4VCUOUP

not attested not anchored not stored refs pending

Optimal Scheme for Quantum Metrology

Haidong Yuan, Hongzhen Chen, Jing Liu, Lingna Wang, Mao Zhang

arxiv:2111.12279 v1 · 2021-11-24 · 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{FYZOTCV2XDXXMZWCL3N4VCUOUP}

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	2026-07-05T03:41:28.074465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e32e98abab8ef7666c25edbca8a8ea3c57f9f24784fbc0caf836bdd9ec3eda9

Aliases

arxiv: 2111.12279 · arxiv_version: 2111.12279v1 · doi: 10.48550/arxiv.2111.12279 · pith_short_12: FYZOTCV2XDXX · pith_short_16: FYZOTCV2XDXXMZWC · pith_short_8: FYZOTCV2

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/FYZOTCV2XDXXMZWCL3N4VCUOUP \
  | 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: 2e32e98abab8ef7666c25edbca8a8ea3c57f9f24784fbc0caf836bdd9ec3eda9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "715eae8ebda1ba0342320030d8534196487354812d9bfb8953e3716e36cbb27f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-11-24T05:37:26Z",
    "title_canon_sha256": "3c85431727db5e02bc71500b5f86cdd9f9633a8acae19ae6af8ce302092d05f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.12279",
    "kind": "arxiv",
    "version": 1
  }
}