Pith Number

pith:K5E4JH3E

pith:2017:K5E4JH3EPF63VDKCBAD3JPEFXR

not attested not anchored not stored refs pending

Wide tailorability of sound absorption using acoustic metamaterials

Abdelkrim Khelif, Aliyasin Elayouch, Mahmoud Addouche

arxiv:1709.03448 v2 · 2017-09-11 · 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{K5E4JH3EPF63VDKCBAD3JPEFXR}

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	2026-05-18T00:01:00.315034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5749c49f64797dba8d420807b4bc85bc6a0c478d3e21aa39eb3064636c084391

Aliases

arxiv: 1709.03448 · arxiv_version: 1709.03448v2 · doi: 10.48550/arxiv.1709.03448 · pith_short_12: K5E4JH3EPF63 · pith_short_16: K5E4JH3EPF63VDKC · pith_short_8: K5E4JH3E

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/K5E4JH3EPF63VDKCBAD3JPEFXR \
  | 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: 5749c49f64797dba8d420807b4bc85bc6a0c478d3e21aa39eb3064636c084391

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4304852754103dd15348a504c313a0af114e0cc87c662fe5b716ca64eb4d6b7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2017-09-11T15:45:42Z",
    "title_canon_sha256": "77a0d35c066d7e7c4441e8e074fc8e31f40b5b38b44034e64405cb70f413b80a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.03448",
    "kind": "arxiv",
    "version": 2
  }
}