Pith Number

pith:EPNFZX3Z

pith:2017:EPNFZX3ZH4SLAX2PPSXRRKVJQX

not attested not anchored not stored refs pending

Spatial filtering of audible sound with acoustic landscapes

Jiancheng Tao, Jianchun Cheng, Shuping Wang, Xiaojun Qiu

arxiv:1707.00468 v2 · 2017-07-03 · 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{EPNFZX3ZH4SLAX2PPSXRRKVJQX}

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	2026-05-18T00:35:19.649427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23da5cdf793f24b05f4f7caf18aaa985ed2bab4c92523fe0ca8309e0b3d8ce9c

Aliases

arxiv: 1707.00468 · arxiv_version: 1707.00468v2 · doi: 10.48550/arxiv.1707.00468 · pith_short_12: EPNFZX3ZH4SL · pith_short_16: EPNFZX3ZH4SLAX2P · pith_short_8: EPNFZX3Z

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/EPNFZX3ZH4SLAX2PPSXRRKVJQX \
  | 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: 23da5cdf793f24b05f4f7caf18aaa985ed2bab4c92523fe0ca8309e0b3d8ce9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eee36ee60bc762a5ab525e39bcd3fb26cf85842f7b6a602c70578b97717b1cc2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2017-07-03T10:01:48Z",
    "title_canon_sha256": "5130b0548240f51df829c4e787a493e9e774816494239fa2eef4f79fe3518818"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00468",
    "kind": "arxiv",
    "version": 2
  }
}