Pith Number

pith:4UCE3RWC

pith:2010:4UCE3RWCTCGLFUV5O2CZH7SI7I

not attested not anchored not stored refs pending

Noise control by sonic crystal barriers made of recycled materials

Daniel Torrent, Francisco Cervera, Francisco Simon, Jose Sanchez-Dehesa, Suitberto Cabrera, Victor M. Garcia-Chocano

arxiv:1004.2570 v4 · 2010-04-15 · 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{4UCE3RWCTCGLFUV5O2CZH7SI7I}

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	2026-05-18T00:49:19.682786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5044dc6c2988cb2d2bd768593fe48fa3eebb685f115d19454e9b81f89874721

Aliases

arxiv: 1004.2570 · arxiv_version: 1004.2570v4 · doi: 10.48550/arxiv.1004.2570 · pith_short_12: 4UCE3RWCTCGL · pith_short_16: 4UCE3RWCTCGLFUV5 · pith_short_8: 4UCE3RWC

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/4UCE3RWCTCGLFUV5O2CZH7SI7I \
  | 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: e5044dc6c2988cb2d2bd768593fe48fa3eebb685f115d19454e9b81f89874721

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1e5a966f49fbf28f9ede14a9700c204b3fed1627096966d8fe488e658735aaf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2010-04-15T08:01:44Z",
    "title_canon_sha256": "bc35fc56ff300a75f1e37d2ca65b53c348303f2df2270c20553507dd701398ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2570",
    "kind": "arxiv",
    "version": 4
  }
}