Pith Number

pith:IXXMXSSW

pith:2017:IXXMXSSWXW36VQNNGCCBEJTKY2

not attested not anchored not stored refs pending

Ergoregion in Metamaterials Mimicking a Kerr Spacetime

Danilo G. Pires, Jos\'e C. A. Rocha, Paulo A. Brand\~ao

arxiv:1709.10349 v2 · 2017-09-29 · 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{IXXMXSSWXW36VQNNGCCBEJTKY2}

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	2026-05-18T00:23:32.943443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45eecbca56bdb7eac1ad308412266ac6af322e71ad270285deb663b96adcb3a5

Aliases

arxiv: 1709.10349 · arxiv_version: 1709.10349v2 · doi: 10.48550/arxiv.1709.10349 · pith_short_12: IXXMXSSWXW36 · pith_short_16: IXXMXSSWXW36VQNN · pith_short_8: IXXMXSSW

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/IXXMXSSWXW36VQNNGCCBEJTKY2 \
  | 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: 45eecbca56bdb7eac1ad308412266ac6af322e71ad270285deb663b96adcb3a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04464a68a7969759396703b2b0d927d4465fdcf6a8e0fbbec825a135e37970c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-09-29T11:51:59Z",
    "title_canon_sha256": "218504be466fc609f21b1fc5cbb79f5511bd306cd02208703008bb0a81decb53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.10349",
    "kind": "arxiv",
    "version": 2
  }
}