Pith Number

pith:H4MEPXNV

pith:2008:H4MEPXNVRPBM6NU2XL47YO3MPS

not attested not anchored not stored refs pending

Optical realization of a quantum beam splitter

H. Moya-Cessa, R. Mar-Sarao

arxiv:0808.0187 v1 · 2008-08-01 · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4MEPXNVRPBM6NU2XL47YO3MPS}

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	2026-05-18T03:31:18.280670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f1847ddb58bc2cf369abaf9fc3b6c7c81b85e3c27e0bebf8bdf81d2b7fd1043

Aliases

arxiv: 0808.0187 · arxiv_version: 0808.0187v1 · doi: 10.48550/arxiv.0808.0187 · pith_short_12: H4MEPXNVRPBM · pith_short_16: H4MEPXNVRPBM6NU2 · pith_short_8: H4MEPXNV

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/H4MEPXNVRPBM6NU2XL47YO3MPS \
  | 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: 3f1847ddb58bc2cf369abaf9fc3b6c7c81b85e3c27e0bebf8bdf81d2b7fd1043

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f0cd7f4a69db2bc48512bd340ffa5c0e06bbdc3254d066452a4ec9beb82ebf0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2008-08-01T19:59:30Z",
    "title_canon_sha256": "3ec92da14989aaf9c659fa97bc2841547d1ba2794c6634f2af932d782e8ad63e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.0187",
    "kind": "arxiv",
    "version": 1
  }
}