Pith Number

pith:5W3N764T

pith:2014:5W3N764TBNL65YYGDJQZJX4XEQ

not attested not anchored not stored refs pending

Sound Focusing by Acoustic Luneburg Lens

Sang-Hoon Kim

arxiv:1409.5489 v2 · 2014-09-18 · cond-mat.mtrl-sci

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5W3N764TBNL65YYGDJQZJX4XEQ}

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	2026-05-18T02:32:30.541887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edb6dffb930b57eee3061a6194df97240d7c6ebc87f7f9a02e6c98c5c649cfc0

Aliases

arxiv: 1409.5489 · arxiv_version: 1409.5489v2 · doi: 10.48550/arxiv.1409.5489 · pith_short_12: 5W3N764TBNL6 · pith_short_16: 5W3N764TBNL65YYG · pith_short_8: 5W3N764T

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/5W3N764TBNL65YYGDJQZJX4XEQ \
  | 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: edb6dffb930b57eee3061a6194df97240d7c6ebc87f7f9a02e6c98c5c649cfc0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cdc7e5e508b23edaef3b614e4860ee7affb8f9cb3e610ca0e0e04c104e5deee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2014-09-18T23:20:21Z",
    "title_canon_sha256": "6003af7ef1dc71554e54a618058abf6ac84866bbe6740c02595434f10207f057"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5489",
    "kind": "arxiv",
    "version": 2
  }
}