Pith Number

pith:HZTGHFG4

pith:2026:HZTGHFG45THFSYEUQPKN7A6HNZ

not attested not anchored not stored refs pending

An Iterated Hybrid Fast Parallel FIR Filter

Keshab K. Parhi

arxiv:2601.15582 v1 · 2026-01-22 · 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{HZTGHFG45THFSYEUQPKN7A6HNZ}

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	2026-06-30T02:18:06.516003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e666394dcecce59609483d4df83c76e5b5c1cdfc06817fbb70c68938b6947d3

Aliases

arxiv: 2601.15582 · arxiv_version: 2601.15582v1 · doi: 10.48550/arxiv.2601.15582 · pith_short_12: HZTGHFG45THF · pith_short_16: HZTGHFG45THFSYEU · pith_short_8: HZTGHFG4

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/HZTGHFG45THFSYEUQPKN7A6HNZ \
  | 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: 3e666394dcecce59609483d4df83c76e5b5c1cdfc06817fbb70c68938b6947d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6514b102017dee02058e4099c1c0230d097fc2272f51a715f11389268531211",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-01-22T02:03:36Z",
    "title_canon_sha256": "6de755366d1dbcb39fb3d0209e91b93f6984429eaddd1c43a6005771e382a80c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.15582",
    "kind": "arxiv",
    "version": 1
  }
}