Pith Number

pith:Y3BBZQMR

pith:2020:Y3BBZQMRQJCDQLVT6E4KITSS5C

not attested not anchored not stored refs pending

Frequency-Dependent Attenuation Reconstruction with an Acoustic Reflector

Dieter Schweizer, Orcun Goksel, Ozan Unal, Richard Rau, Valery Vishnevskiy

arxiv:2003.05658 v2 · 2020-03-12 · physics.med-ph · eess.SP · 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{Y3BBZQMRQJCDQLVT6E4KITSS5C}

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	2026-07-05T01:41:51.353842Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6c21cc1918244382eb3f138a44e52e8bd929d79d82f5804f1ea42b3662ec9a2

Aliases

arxiv: 2003.05658 · arxiv_version: 2003.05658v2 · doi: 10.48550/arxiv.2003.05658 · pith_short_12: Y3BBZQMRQJCD · pith_short_16: Y3BBZQMRQJCDQLVT · pith_short_8: Y3BBZQMR

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/Y3BBZQMRQJCDQLVT6E4KITSS5C \
  | 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: c6c21cc1918244382eb3f138a44e52e8bd929d79d82f5804f1ea42b3662ec9a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e2776c915fcab7abd0f166d39ac1fbfa989261c99ac1b5a3f4f1b24c4c16a53",
    "cross_cats_sorted": [
      "eess.SP",
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2020-03-12T08:19:33Z",
    "title_canon_sha256": "9a0ecd33e29e92416ef91116e145f0faeb1d7bb4342530486819f656a295f4a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.05658",
    "kind": "arxiv",
    "version": 2
  }
}