Pith Number

pith:WQYKEOTG

pith:2015:WQYKEOTG6JSSHPQ2TLLD5XBIDW

not attested not anchored not stored refs pending

Set-membership improved normalized subband adaptive filter algorithms for acoustic echo cancellation

Badong Chen, Haiquan Zhao, Yi Yu

arxiv:1512.05031 v5 · 2015-12-16 · 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{WQYKEOTG6JSSHPQ2TLLD5XBIDW}

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	2026-05-18T00:38:46.697399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b430a23a66f26523be1a9ad63edc281d8e7a77c51343a4bdb7544434f9568961

Aliases

arxiv: 1512.05031 · arxiv_version: 1512.05031v5 · doi: 10.48550/arxiv.1512.05031 · pith_short_12: WQYKEOTG6JSS · pith_short_16: WQYKEOTG6JSSHPQ2 · pith_short_8: WQYKEOTG

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/WQYKEOTG6JSSHPQ2TLLD5XBIDW \
  | 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: b430a23a66f26523be1a9ad63edc281d8e7a77c51343a4bdb7544434f9568961

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22b03d881a60581e8784c6eba20da2499f3060aad4bf266d28318e47563c2e02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2015-12-16T02:32:24Z",
    "title_canon_sha256": "836c4294df65a734d0ea296ccfb74302f717249371a24febb991f872b1f2f612"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.05031",
    "kind": "arxiv",
    "version": 5
  }
}