Pith Number

pith:MUBRDJFQ

pith:2018:MUBRDJFQYLSJSWPUK7QWKHWLWM

not attested not anchored not stored refs pending

Experimental construction of a versatile four-photon source

Anton\'in \v{C}ernoch, Karel Lemr, Karol Bartkiewicz

arxiv:1808.07073 v1 · 2018-08-21 · 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{MUBRDJFQYLSJSWPUK7QWKHWLWM}

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	2026-05-18T00:07:32.000500Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

650311a4b0c2e49959f457e1651ecbb31b97ce0fec12e565f95fa14b72e3bdcf

Aliases

arxiv: 1808.07073 · arxiv_version: 1808.07073v1 · doi: 10.48550/arxiv.1808.07073 · pith_short_12: MUBRDJFQYLSJ · pith_short_16: MUBRDJFQYLSJSWPU · pith_short_8: MUBRDJFQ

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/MUBRDJFQYLSJSWPUK7QWKHWLWM \
  | 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: 650311a4b0c2e49959f457e1651ecbb31b97ce0fec12e565f95fa14b72e3bdcf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14a5b9f6fef53de2dafeadcb7266b9a213c4e3ada5322945688c09d8805c023d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-08-21T18:04:42Z",
    "title_canon_sha256": "1ad0808bfdc450b37a6c364604c0d24299443c2177c6f5ee43c434d81a3b5dd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07073",
    "kind": "arxiv",
    "version": 1
  }
}