Pith Number

pith:UI4TRU45

pith:2018:UI4TRU45EIVRVWTAQZVELVJGPO

not attested not anchored not stored refs pending

Observation of Stimulated Hawking Radiation in Optics

David Bermudez, Jonathan Drori, Ulf Leonhardt, Yaron Silberberg, Yuval Rosenberg

arxiv:1808.09244 v4 · 2018-08-28 · gr-qc · 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{UI4TRU45EIVRVWTAQZVELVJGPO}

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	2026-05-17T23:56:20.042502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a23938d39d222b1ada60866a45d5267b87d08ef83c5b7687c4575c211d44ee42

Aliases

arxiv: 1808.09244 · arxiv_version: 1808.09244v4 · doi: 10.48550/arxiv.1808.09244 · pith_short_12: UI4TRU45EIVR · pith_short_16: UI4TRU45EIVRVWTA · pith_short_8: UI4TRU45

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/UI4TRU45EIVRVWTAQZVELVJGPO \
  | 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: a23938d39d222b1ada60866a45d5267b87d08ef83c5b7687c4575c211d44ee42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "061ab3b5b2d661c3ed4ab78c13bcb55c98c076ab809d4788431939ff5641b233",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-08-28T12:06:36Z",
    "title_canon_sha256": "dcb0d3de3d95b4c08ca1029c55effad1a4239c90cc38dafec81d8f4e84f75ff5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.09244",
    "kind": "arxiv",
    "version": 4
  }
}