Pith Number

pith:BL5E6BRQ

pith:2017:BL5E6BRQC2F7E5H5BOMWDBC5J7

not attested not anchored not stored refs pending

Achievement of acoustical properties of foam materials by tuning membrane level: Elaborations, models and experiments

Camille Perrot, Olivier Pitois, Van Hai Trinh, Vincent Langlois, Yacine Khidas

arxiv:1712.03849 v1 · 2017-12-11 · 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{BL5E6BRQC2F7E5H5BOMWDBC5J7}

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	2026-05-18T00:28:19.751159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0afa4f0630168bf274fd0b9961845d4fd44749aef39a40a03ac2a762a81f8f26

Aliases

arxiv: 1712.03849 · arxiv_version: 1712.03849v1 · doi: 10.48550/arxiv.1712.03849 · pith_short_12: BL5E6BRQC2F7 · pith_short_16: BL5E6BRQC2F7E5H5 · pith_short_8: BL5E6BRQ

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/BL5E6BRQC2F7E5H5BOMWDBC5J7 \
  | 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: 0afa4f0630168bf274fd0b9961845d4fd44749aef39a40a03ac2a762a81f8f26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "777c9e815b0a828594d5614fee2052f53e262d020cff5078e3623eee9bb19af1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2017-12-11T15:50:41Z",
    "title_canon_sha256": "b659ffaf4a662bd3ab63cdf238fe9c8e111f4169357a92c4b3856a220d6d70eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.03849",
    "kind": "arxiv",
    "version": 1
  }
}