Pith Number

pith:3KXNRVM4

pith:2009:3KXNRVM4NXCMS42OTKISOSMVWS

not attested not anchored not stored refs pending

Single Photons Made-to-Measure

Axel Kuhn, Daniel Ljunggren, Genko S. Vasilev

arxiv:0907.0761 v2 · 2009-07-04 · 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{3KXNRVM4NXCMS42OTKISOSMVWS}

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	2026-05-18T02:13:05.314034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daaed8d59c6dc4c9734e9a91274995b4962756145b03e335f70d5f9af0530ec0

Aliases

arxiv: 0907.0761 · arxiv_version: 0907.0761v2 · doi: 10.48550/arxiv.0907.0761 · pith_short_12: 3KXNRVM4NXCM · pith_short_16: 3KXNRVM4NXCMS42O · pith_short_8: 3KXNRVM4

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/3KXNRVM4NXCMS42OTKISOSMVWS \
  | 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: daaed8d59c6dc4c9734e9a91274995b4962756145b03e335f70d5f9af0530ec0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c0e446e4fcf5d1e49f1efeed5056ddc57d2c3e78bdec40a94ee7481fcda8e3d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-07-04T13:57:55Z",
    "title_canon_sha256": "3d1a5e0b449709b87937bf4ee16b0f1557f9f1272b2bfd51baa04e4a10997b5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0761",
    "kind": "arxiv",
    "version": 2
  }
}