Pith Number

pith:VBBUQCJG

pith:2016:VBBUQCJGT42JLRRIKW4GW4JOGX

not attested not anchored not stored refs pending

Robust coherence-based spectral enhancement for speech recognition in adverse real-world environments

Andreas Schwarz, Christian Huemmer, Hendrik Barfuss, Walter Kellermann

arxiv:1604.03393 v4 · 2016-04-12 · 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{VBBUQCJGT42JLRRIKW4GW4JOGX}

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	2026-05-18T00:38:32.177916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8434809269f3495c62855b86b712e35eb05d0e72bb8c3e491d04e0c3346175e

Aliases

arxiv: 1604.03393 · arxiv_version: 1604.03393v4 · doi: 10.48550/arxiv.1604.03393 · pith_short_12: VBBUQCJGT42J · pith_short_16: VBBUQCJGT42JLRRI · pith_short_8: VBBUQCJG

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/VBBUQCJGT42JLRRIKW4GW4JOGX \
  | 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: a8434809269f3495c62855b86b712e35eb05d0e72bb8c3e491d04e0c3346175e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c176b6ef9706e3c988baa51ff0bd92bd608e9762205344a9c7d4d5373e524518",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2016-04-12T13:11:12Z",
    "title_canon_sha256": "c6c84e9f16a4517a1dd1a6ce6684ac36f66c34da6f7082bb69262cb4f0003962"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03393",
    "kind": "arxiv",
    "version": 4
  }
}