Pith Number

pith:MJ7QGKJS

pith:2020:MJ7QGKJSFX2TKIC6ZIGOYHYJSJ

not attested not anchored not stored refs pending

Design and Implementation of Butterworth, Chebyshev-I and Elliptic Filter for Speech Signal Analysis

Md. Mehedi Hasan, Md. Rafiqul Islam, Mursalin Sayeed, Prajoy Podder

arxiv:2002.03130 v2 · 2020-02-08 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MJ7QGKJSFX2TKIC6ZIGOYHYJSJ}

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	2026-07-05T01:06:09.884038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

627f0329322df535205eca0cec1f09924659ae8dee2ad78968d4cf56f231441f

Aliases

arxiv: 2002.03130 · arxiv_version: 2002.03130v2 · doi: 10.48550/arxiv.2002.03130 · pith_short_12: MJ7QGKJSFX2T · pith_short_16: MJ7QGKJSFX2TKIC6 · pith_short_8: MJ7QGKJS

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/MJ7QGKJSFX2TKIC6ZIGOYHYJSJ \
  | 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: 627f0329322df535205eca0cec1f09924659ae8dee2ad78968d4cf56f231441f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fad9ca80645b29cd48e2c403aa6221240ca12fb926090b00e1176f2939c52ff",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2020-02-08T10:05:01Z",
    "title_canon_sha256": "6d06ef7c87203c287ba7903d254a219b90c4d1415a372e076a768811e72c6c6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.03130",
    "kind": "arxiv",
    "version": 2
  }
}