Pith Number

pith:B5AHCKHH

pith:2025:B5AHCKHHJ5XOHAVJDLQWG3ATKE

not attested not anchored not stored refs pending

Real-Time Piano Note Frequency Detection Using FPGA and FFT Core

D.G. Perera, Shafayet M. Anik

arxiv:2509.00589 v1 · 2025-08-30 · cs.AR · cs.SD · eess.AS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B5AHCKHHJ5XOHAVJDLQWG3ATKE}

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	2026-07-05T12:02:19.146073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f407128e74f6ee382a91ae1636c135115156da3c8df1bd3353f070428f1c1ad

Aliases

arxiv: 2509.00589 · arxiv_version: 2509.00589v1 · doi: 10.48550/arxiv.2509.00589 · pith_short_12: B5AHCKHHJ5XO · pith_short_16: B5AHCKHHJ5XOHAVJ · pith_short_8: B5AHCKHH

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/B5AHCKHHJ5XOHAVJDLQWG3ATKE \
  | 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: 0f407128e74f6ee382a91ae1636c135115156da3c8df1bd3353f070428f1c1ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "254b1cd8c1b1414797374a81bed4c7c6e3ea1985889f506635c6e29ac94f6c0a",
    "cross_cats_sorted": [
      "cs.SD",
      "eess.AS"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.AR",
    "submitted_at": "2025-08-30T18:52:41Z",
    "title_canon_sha256": "3a378b9dfcbc276649421a2e52aca39e47dbbc7d4edc23e4c81d1d0a0d380468"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.00589",
    "kind": "arxiv",
    "version": 1
  }
}