Pith Number

pith:OP7NSGPM

pith:2012:OP7NSGPM63PQBI3FUPLO3ELEQ6

not attested not anchored not stored refs pending

Semi-blind Source Separation via Sparse Representations and Online Dictionary Learning

Jarvis D. Haupt, Sirisha Rambhatla

arxiv:1212.0451 v2 · 2012-12-03 · cs.SD · stat.AP · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OP7NSGPM63PQBI3FUPLO3ELEQ6}

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	2026-05-18T02:28:48.390881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73fed919ecf6df00a365a3d6ed9164878cebd60978f7056f7df2615c0a47d2d8

Aliases

arxiv: 1212.0451 · arxiv_version: 1212.0451v2 · doi: 10.48550/arxiv.1212.0451 · pith_short_12: OP7NSGPM63PQ · pith_short_16: OP7NSGPM63PQBI3F · pith_short_8: OP7NSGPM

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/OP7NSGPM63PQBI3FUPLO3ELEQ6 \
  | 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: 73fed919ecf6df00a365a3d6ed9164878cebd60978f7056f7df2615c0a47d2d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02d3284a1491b582c88af84f559058e9fc479992cb9d1aee0ba8c8bd95b2e09a",
    "cross_cats_sorted": [
      "stat.AP",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2012-12-03T17:06:41Z",
    "title_canon_sha256": "1ebd855fb93aff840ea1c43fcb85639a0c751f4086e3cde6e49f081b007208b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0451",
    "kind": "arxiv",
    "version": 2
  }
}