Pith Number

pith:QDWDI5H3

pith:2016:QDWDI5H3VLFPKK7UXVFPBEDKGT

not attested not anchored not stored refs pending

A Band-independent Variable Step Size Proportionate Normalized Subband Adaptive Filter Algorithm

Haiquan Zhao, Yi Yu

arxiv:1604.04999 v2 · 2016-04-18 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDWDI5H3VLFPKK7UXVFPBEDKGT}

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	2026-05-18T00:41:18.384937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80ec3474fbaacaf52bf4bd4af0906a34c9373f684b1f213da3efbffd9f2c2e90

Aliases

arxiv: 1604.04999 · arxiv_version: 1604.04999v2 · doi: 10.48550/arxiv.1604.04999 · pith_short_12: QDWDI5H3VLFP · pith_short_16: QDWDI5H3VLFPKK7U · pith_short_8: QDWDI5H3

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/QDWDI5H3VLFPKK7UXVFPBEDKGT \
  | 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: 80ec3474fbaacaf52bf4bd4af0906a34c9373f684b1f213da3efbffd9f2c2e90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd18e2ddb72098beaf894af1244be875006a8103706a050be669762423428324",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2016-04-18T05:56:20Z",
    "title_canon_sha256": "8ed4918bc4fb017e3ed804e74b12038b0287dd0e9b442a01a3e56af77d88e8ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04999",
    "kind": "arxiv",
    "version": 2
  }
}