Pith Number

pith:PKYLKG6P

pith:2013:PKYLKG6PDNLCDJNEFL55VV7JYI

not attested not anchored not stored refs pending

Acoustic Echo Cancellation Postfilter Design Issues For Speech Recognition System

Urmila Shrawankar, V M Thakare

arxiv:1305.1141 v1 · 2013-05-06 · cs.SD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PKYLKG6PDNLCDJNEFL55VV7JYI}

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	2026-05-18T03:26:24.013610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ab0b51bcf1b5621a5a42afbdad7e9c20c3b9e08a64ecd9c61bec36f11435528

Aliases

arxiv: 1305.1141 · arxiv_version: 1305.1141v1 · doi: 10.48550/arxiv.1305.1141 · pith_short_12: PKYLKG6PDNLC · pith_short_16: PKYLKG6PDNLCDJNE · pith_short_8: PKYLKG6P

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/PKYLKG6PDNLCDJNEFL55VV7JYI \
  | 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: 7ab0b51bcf1b5621a5a42afbdad7e9c20c3b9e08a64ecd9c61bec36f11435528

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4f8fb7e8498e0dd9aa0f6b59d93b67b549090abce2b09aa719a1e4e60a04ebb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2013-05-06T10:33:06Z",
    "title_canon_sha256": "74cf51407ca89f97292a3fec027e29de3d29ebf30c5f4e553268512141dceaf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1141",
    "kind": "arxiv",
    "version": 1
  }
}