Pith Number

pith:G4Y4DFHM

pith:2025:G4Y4DFHMURTKMCO5LLERX5ZIQ2

not attested not anchored not stored refs pending

30+ Years of Source Separation Research: Achievements and Future Challenges

Gordon Wichern, Nobutaka Ito, Reinhold Haeb-Umbach, Shoko Araki, Yuki Mitsufuji, Zhong-Qiu Wang

arxiv:2501.11837 v1 · 2025-01-21 · eess.AS · cs.SD · 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{G4Y4DFHMURTKMCO5LLERX5ZIQ2}

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	2026-07-05T10:03:14.663577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3731c194eca466a609dd5ac91bf728868689a0ac8b31276296bb4ecb4760c629

Aliases

arxiv: 2501.11837 · arxiv_version: 2501.11837v1 · doi: 10.48550/arxiv.2501.11837 · pith_short_12: G4Y4DFHMURTK · pith_short_16: G4Y4DFHMURTKMCO5 · pith_short_8: G4Y4DFHM

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/G4Y4DFHMURTKMCO5LLERX5ZIQ2 \
  | 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: 3731c194eca466a609dd5ac91bf728868689a0ac8b31276296bb4ecb4760c629

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3750f1fe4748e07ec751b5dba35d4ff8e23c4bef3ac18e02dc323e08fa35707",
    "cross_cats_sorted": [
      "cs.SD",
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.AS",
    "submitted_at": "2025-01-21T02:48:00Z",
    "title_canon_sha256": "106bfd27cd2990839c9f77e8632c4ae2cb01f18e16a958acbbb6774d5ff68dfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.11837",
    "kind": "arxiv",
    "version": 1
  }
}