Pith Number

pith:HZJZR5DP

pith:2014:HZJZR5DPOGTAJXRHJPISOROGSG

not attested not anchored not stored refs pending

Perfect and broadband acoustic absorption by critical coupling

A. Merkel, G. Theocharis, O. Richoux, V. Pagneux, V. Romero-Garc\'ia, V. Tournat

arxiv:1501.00191 v1 · 2014-12-29 · physics.class-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{HZJZR5DPOGTAJXRHJPISOROGSG}

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	2026-05-18T02:30:09.924611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e5398f46f71a604de274bd12745c691a3423a2dc5f44d377b0c43b6563a82fa

Aliases

arxiv: 1501.00191 · arxiv_version: 1501.00191v1 · doi: 10.48550/arxiv.1501.00191 · pith_short_12: HZJZR5DPOGTA · pith_short_16: HZJZR5DPOGTAJXRH · pith_short_8: HZJZR5DP

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/HZJZR5DPOGTAJXRHJPISOROGSG \
  | 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: 3e5398f46f71a604de274bd12745c691a3423a2dc5f44d377b0c43b6563a82fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c335c58efac2fb772feb19b8bdb271cc0c84072d7561743a77beb7ef77b46fc5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2014-12-29T17:18:54Z",
    "title_canon_sha256": "55f8d8cda70e90dd418f12a584dde6c55e738151d6fbddf20a5de650589471be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.00191",
    "kind": "arxiv",
    "version": 1
  }
}