Pith Number

pith:YOVIJ2WI

pith:2017:YOVIJ2WIWOGYT6JMU6KXS5NCGN

not attested not anchored not stored refs pending

Acoustic Impedance Calculation via Numerical Solution of the Inverse Helmholtz Problem

Carlo Scalo, Danish Patel, Prateek Gupta

arxiv:1708.02069 v3 · 2017-08-04 · physics.comp-ph · physics.flu-dyn

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YOVIJ2WIWOGYT6JMU6KXS5NCGN}

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	2026-05-18T00:26:36.623180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3aa84eac8b38d89f92ca7957975a233708243ae507ef247f58ea5c3af22a4e3

Aliases

arxiv: 1708.02069 · arxiv_version: 1708.02069v3 · doi: 10.48550/arxiv.1708.02069 · pith_short_12: YOVIJ2WIWOGY · pith_short_16: YOVIJ2WIWOGYT6JM · pith_short_8: YOVIJ2WI

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/YOVIJ2WIWOGYT6JMU6KXS5NCGN \
  | 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: c3aa84eac8b38d89f92ca7957975a233708243ae507ef247f58ea5c3af22a4e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a43e382bfc3922d23681280fba299244d07bf505058090663c30a64e49f460f",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2017-08-04T06:27:02Z",
    "title_canon_sha256": "e6f6bbc02912844428cc4ec88a9f3fd78dff688933dc01f736047608804cc7a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.02069",
    "kind": "arxiv",
    "version": 3
  }
}