Pith Number

pith:576KGQQ5

pith:2004:576KGQQ5A4XXWPWSGEAXZVFWVC

not attested not anchored not stored refs pending

Entanglement Assisted Metrology

Chandrasekhar Ramanathan, David G. Cory, Joseph Emerson, Nicolas Boulant, Paola Cappellaro, Seth Lloyd

arxiv:quant-ph/0411128 v1 · 2004-11-18 · 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{576KGQQ5A4XXWPWSGEAXZVFWVC}

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	2026-07-04T14:46:51.200702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

effca3421d072f7b3ed231017cd4b6a884126bd48124d8aa354c836bbc131125

Aliases

arxiv: quant-ph/0411128 · arxiv_version: quant-ph/0411128v1 · doi: 10.48550/arxiv.quant-ph/0411128 · pith_short_12: 576KGQQ5A4XX · pith_short_16: 576KGQQ5A4XXWPWS · pith_short_8: 576KGQQ5

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/576KGQQ5A4XXWPWSGEAXZVFWVC \
  | 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: effca3421d072f7b3ed231017cd4b6a884126bd48124d8aa354c836bbc131125

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56818a09e5f69e323c71939f4195316f26f16e14a5092748adf461ffbf64003b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-11-18T00:07:49Z",
    "title_canon_sha256": "5db3382037f1f1f594956a69f42f64e8ceb96f6777219ceec1e5e38bf5e28540"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0411128",
    "kind": "arxiv",
    "version": 1
  }
}