Pith Number

pith:SUR63WXV

pith:2012:SUR63WXVP7WCKRKPRA5DNI3DNX

not attested not anchored not stored refs pending

The information capacity of a single photon

Alexei Gilchrist, Joseph F. Fitzsimons, Peter P. Rohde

arxiv:1211.1427 v1 · 2012-11-07 · 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{SUR63WXVP7WCKRKPRA5DNI3DNX}

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	2026-05-18T02:29:55.351140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9523eddaf57fec25454f883a36a3636dccdde5abe775c9e77c84ce0b0f2f762f

Aliases

arxiv: 1211.1427 · arxiv_version: 1211.1427v1 · doi: 10.48550/arxiv.1211.1427 · pith_short_12: SUR63WXVP7WC · pith_short_16: SUR63WXVP7WCKRKP · pith_short_8: SUR63WXV

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/SUR63WXVP7WCKRKPRA5DNI3DNX \
  | 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: 9523eddaf57fec25454f883a36a3636dccdde5abe775c9e77c84ce0b0f2f762f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "821906e7ac85c054ecbf0ecaa9cd490d9cae742cce6589bdb1375d51d038aa3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-11-07T00:30:40Z",
    "title_canon_sha256": "8554eafa3e1051d437c579cb1710ff60c354b9cc6d51e49bb514e4c28bdb900d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1427",
    "kind": "arxiv",
    "version": 1
  }
}