Pith Number

pith:W5Z5DBJ6

pith:2008:W5Z5DBJ6I5LARSNFKCUKR7J3VU

not attested not anchored not stored refs pending

Demonstrating Heisenberg-limited unambiguous phase estimation without adaptive measurements

B. L. Higgins, D. W. Berry, G. J. Pryde, H. M. Wiseman, M. W. Mitchell, S. D. Bartlett

arxiv:0809.3308 v4 · 2008-09-19 · 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{W5Z5DBJ6I5LARSNFKCUKR7J3VU}

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	2026-05-18T04:41:36.878752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b773d1853e475608c9a550a8a8fd3bad3cc33c4851b668e31dbbccccdce095b4

Aliases

arxiv: 0809.3308 · arxiv_version: 0809.3308v4 · doi: 10.48550/arxiv.0809.3308 · pith_short_12: W5Z5DBJ6I5LA · pith_short_16: W5Z5DBJ6I5LARSNF · pith_short_8: W5Z5DBJ6

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/W5Z5DBJ6I5LARSNFKCUKR7J3VU \
  | 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: b773d1853e475608c9a550a8a8fd3bad3cc33c4851b668e31dbbccccdce095b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "339ba2f81fedcbba8ce661b1dbe4415d82d072c50ea738f98a87fc2820d801ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-09-19T06:43:27Z",
    "title_canon_sha256": "0680098dbf1b755f8f1661cbdba86dc9a06e6fa73c57df3a46651d20251a95ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3308",
    "kind": "arxiv",
    "version": 4
  }
}