Pith Number

pith:B7RQZX6J

pith:2018:B7RQZX6JNW6FHTK4OPPBQJAZUS

not attested not anchored not stored refs pending

Acoustic Supercoupling in a Zero-Compressibility Waveguide

A. Al\`u, H. Esfahlani, M. McDermott, M. S. Byrne

arxiv:1812.08321 v1 · 2018-12-18 · 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{B7RQZX6JNW6FHTK4OPPBQJAZUS}

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	2026-05-17T23:57:51.597064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fe30cdfc96dbc53cd5c73de182419a4b97136494098f86dbebfafbc672a723f

Aliases

arxiv: 1812.08321 · arxiv_version: 1812.08321v1 · doi: 10.48550/arxiv.1812.08321 · pith_short_12: B7RQZX6JNW6F · pith_short_16: B7RQZX6JNW6FHTK4 · pith_short_8: B7RQZX6J

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/B7RQZX6JNW6FHTK4OPPBQJAZUS \
  | 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: 0fe30cdfc96dbc53cd5c73de182419a4b97136494098f86dbebfafbc672a723f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38f433e177513f15dd4c90be23fca66224c38a0b0216a5d217accc7660ebfaad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2018-12-18T15:25:43Z",
    "title_canon_sha256": "8c525207a14a8e75b14a8d5496801e2d34b3d4591acc23ef67484661d98aa9bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.08321",
    "kind": "arxiv",
    "version": 1
  }
}