Pith Number

pith:FTJIC4TF

pith:2014:FTJIC4TFDX645UPYRBIIKS2VBO

not attested not anchored not stored refs pending

A passively tunable non-resonant acoustic metamaterial lens for selective ultrasonic excitation

Fabio Semperlotti, Hongfei Zhu

arxiv:1407.1314 v1 · 2014-07-04 · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FTJIC4TFDX645UPYRBIIKS2VBO}

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	2026-05-18T01:42:41.833729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cd28172651dfdced1f88850854b550bb667443c5e8ecedcc09d46f4d39e924e

Aliases

arxiv: 1407.1314 · arxiv_version: 1407.1314v1 · doi: 10.48550/arxiv.1407.1314 · pith_short_12: FTJIC4TFDX64 · pith_short_16: FTJIC4TFDX645UPY · pith_short_8: FTJIC4TF

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/FTJIC4TFDX645UPYRBIIKS2VBO \
  | 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: 2cd28172651dfdced1f88850854b550bb667443c5e8ecedcc09d46f4d39e924e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b39e46abdb5994e3e4fb0c6051f0aa20dc26f893877558d9c2dea75cfbdab2e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2014-07-04T18:37:17Z",
    "title_canon_sha256": "fe2a20eb4398e74e5be16ee7c1a5d2381c71994133959bdc6d3ba9bc943c2e15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1314",
    "kind": "arxiv",
    "version": 1
  }
}