Pith Number

pith:2RB4EGGQ

pith:2011:2RB4EGGQGW2EXQQBTUAQISEEKB

not attested not anchored not stored refs pending

Heralded amplification for precision measurements with spin ensembles

Christoph Simon, Eugene S. Polzik, Nicolas Brunner

arxiv:1107.2828 v1 · 2011-07-14 · 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{2RB4EGGQGW2EXQQBTUAQISEEKB}

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	2026-05-18T02:01:16.962722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d443c218d035b44bc2019d0104488450695b8d5a68a8dc609e33126704b23e04

Aliases

arxiv: 1107.2828 · arxiv_version: 1107.2828v1 · doi: 10.48550/arxiv.1107.2828 · pith_short_12: 2RB4EGGQGW2E · pith_short_16: 2RB4EGGQGW2EXQQB · pith_short_8: 2RB4EGGQ

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/2RB4EGGQGW2EXQQBTUAQISEEKB \
  | 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: d443c218d035b44bc2019d0104488450695b8d5a68a8dc609e33126704b23e04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "477af1bcfc52413040381ac3c417854a9fb218c247cd80beff11b025f4d64785",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-07-14T14:01:45Z",
    "title_canon_sha256": "929d46c8c66ed37049e4ec03325393b1d673a598f7d0cf0b529080b6aa0351fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2828",
    "kind": "arxiv",
    "version": 1
  }
}