Pith Number

pith:IUQL4FF7

pith:2016:IUQL4FF767QI574NMUYCV5AWWQ

not attested not anchored not stored refs pending

Design of acoustic metamaterials through nonlinear programming

Andrea Bacigalupo, Giorgio Gnecco, Luigi Gambarotta, Marco Lepidi

arxiv:1603.07717 v2 · 2016-03-24 · 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{IUQL4FF767QI574NMUYCV5AWWQ}

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	2026-05-18T01:14:12.481781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4520be14bff7e08eff8d65302af416b429b2b01e6c98f7bbbecf95964a9b811d

Aliases

arxiv: 1603.07717 · arxiv_version: 1603.07717v2 · doi: 10.48550/arxiv.1603.07717 · pith_short_12: IUQL4FF767QI · pith_short_16: IUQL4FF767QI574N · pith_short_8: IUQL4FF7

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/IUQL4FF767QI574NMUYCV5AWWQ \
  | 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: 4520be14bff7e08eff8d65302af416b429b2b01e6c98f7bbbecf95964a9b811d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3700adf456e00964bd67e3ab5f5c1d25c6f14c0128ad85ce76bda9163ae6d5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2016-03-24T19:37:59Z",
    "title_canon_sha256": "ae75729c04b2341ee5a9d0db4d0b2228d446bb205b9ffa4e40380459fb291da3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07717",
    "kind": "arxiv",
    "version": 2
  }
}