Pith Number

pith:23YQHTJV

pith:2018:23YQHTJVE6TDCJBSPBVO32BYOQ

not attested not anchored not stored refs pending

Superabsorbing metamaterial wormhole: Physical modeling and wave interaction effects

Hugo R. L. Ferreira, Iurii O. Medvedev, Nuno G. B. Bras, Stanislav I. Maslovski

arxiv:1806.07818 v2 · 2018-06-19 · physics.class-ph · cond-mat.str-el · 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{23YQHTJVE6TDCJBSPBVO32BYOQ}

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	2026-05-17T23:57:10.270418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6f103cd3527a6312432786aede838742c6f83e4b0f993c63fb6c0a27d215b43

Aliases

arxiv: 1806.07818 · arxiv_version: 1806.07818v2 · doi: 10.48550/arxiv.1806.07818 · pith_short_12: 23YQHTJVE6TD · pith_short_16: 23YQHTJVE6TDCJBS · pith_short_8: 23YQHTJV

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/23YQHTJVE6TDCJBSPBVO32BYOQ \
  | 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: d6f103cd3527a6312432786aede838742c6f83e4b0f993c63fb6c0a27d215b43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f457b9eeec29c86dbc3f9ddaea5636386b5739a32065349bb6ad273482e2b5f2",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2018-06-19T17:36:21Z",
    "title_canon_sha256": "1b2eb34a4d805d1ab88a7bef09d90bd81d2634232d4006bbb381215cb39cb089"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07818",
    "kind": "arxiv",
    "version": 2
  }
}