Pith Number

pith:6HS4EDVL

pith:2018:6HS4EDVLXJIIE2BIJ532C5H726

not attested not anchored not stored refs pending

Acoustic waveguide filters made up of rigid stacked materials with elastic joints

Andrea Bacigalupo, Francesca Vadal\`a, Luigi Gambarotta, Marco Lepidi

arxiv:1812.01352 v2 · 2018-12-04 · physics.app-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{6HS4EDVLXJIIE2BIJ532C5H726}

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	2026-05-17T23:54:02.315086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1e5c20eabba508268284f77a174ffd79387a8b0dea5d497249dcd1b477f1cba

Aliases

arxiv: 1812.01352 · arxiv_version: 1812.01352v2 · doi: 10.48550/arxiv.1812.01352 · pith_short_12: 6HS4EDVLXJII · pith_short_16: 6HS4EDVLXJIIE2BI · pith_short_8: 6HS4EDVL

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/6HS4EDVLXJIIE2BIJ532C5H726 \
  | 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: f1e5c20eabba508268284f77a174ffd79387a8b0dea5d497249dcd1b477f1cba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c600368cf32f95cc7f13115ee99462b6c1cb047e09889bec3f86ae8b643ef0ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-12-04T12:03:45Z",
    "title_canon_sha256": "bbe2c2843713c13aa30805876e881e786fa975fc115519e75ee67f99ab4c0faa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.01352",
    "kind": "arxiv",
    "version": 2
  }
}