Pith Number

pith:2PURQGE7

pith:2019:2PURQGE7GSTJPKJ7O25HU5EJRJ

not attested not anchored not stored refs pending

Observation of Unidirectional Bound States in the Continuum Enabled by Topological Defects

Bo Zhen, Chao Peng, Jicheng Jin, Marin Solja\v{c}i\'c, Xuefan Yin

arxiv:1904.11464 v2 · 2019-04-25 · 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{2PURQGE7GSTJPKJ7O25HU5EJRJ}

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	2026-05-17T23:42:41.770216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3e918189f34a697a93f76ba7a74898a78317bbadb56fe5a2e32cf82f3cfa027

Aliases

arxiv: 1904.11464 · arxiv_version: 1904.11464v2 · doi: 10.48550/arxiv.1904.11464 · pith_short_12: 2PURQGE7GSTJ · pith_short_16: 2PURQGE7GSTJPKJ7 · pith_short_8: 2PURQGE7

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/2PURQGE7GSTJPKJ7O25HU5EJRJ \
  | 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: d3e918189f34a697a93f76ba7a74898a78317bbadb56fe5a2e32cf82f3cfa027

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "044c032f03776be3d0b2002c085618800e7281453543a10aeb74b5fe9d6811eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-04-25T17:16:15Z",
    "title_canon_sha256": "d3b71caa9fa6100871774123a4e33e6c2468e00045f59ffc231761ac1adfbbfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11464",
    "kind": "arxiv",
    "version": 2
  }
}