Pith Number

pith:HDQACSDU

pith:2013:HDQACSDULLNO6QPUZ5KOPXCDW5

not attested not anchored not stored refs pending

Bioacoustical Periodic Pulse Train Signal Detection and Classification using Spectrogram Intensity Binarization and Energy Projection

Christopher W. Clark, Denise Risch, Harold W. Lewis III, Marian Popescu, Mohammad Pourhomayoun, Peter J. Dugan

arxiv:1305.3250 v3 · 2013-05-14 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HDQACSDULLNO6QPUZ5KOPXCDW5}

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	2026-05-18T03:19:43.702456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38e00148745adaef41f4cf54e7dc43b768fa052ffa48447f1070a3a786c81e5d

Aliases

arxiv: 1305.3250 · arxiv_version: 1305.3250v3 · doi: 10.48550/arxiv.1305.3250 · pith_short_12: HDQACSDULLNO · pith_short_16: HDQACSDULLNO6QPU · pith_short_8: HDQACSDU

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/HDQACSDULLNO6QPUZ5KOPXCDW5 \
  | 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: 38e00148745adaef41f4cf54e7dc43b768fa052ffa48447f1070a3a786c81e5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd2130e12516d1eb6f9a2c1df9407a42bc777d8f6dbc9f84c30f16f3a52218bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-05-14T18:49:52Z",
    "title_canon_sha256": "6889ca1bbb8235adf6ed4922caf08034b3e5fc8c1fa85cbe8f4831cc4b6d25be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3250",
    "kind": "arxiv",
    "version": 3
  }
}