Pith Number

pith:W7TMXXQW

pith:2024:W7TMXXQWZPPLZMPZHAC7KHE3WG

not attested not anchored not stored refs pending

Informed FastICA: Semi-Blind Minimum Variance Distortionless Beamformer

Jaroslav \v{C}mejla, Ji\v{r}\'i M\'alek, Stephen O'Regan, Zbyn\v{e}k Koldovsk\'y

arxiv:2407.09259 v1 · 2024-07-12 · eess.SP · cs.SD · eess.AS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W7TMXXQWZPPLZMPZHAC7KHE3WG}

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	2026-07-05T08:43:17.061300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7e6cbde16cbdebcb1f93805f51c9bb18c05a688887b2e16c5b6c6064d0220d7

Aliases

arxiv: 2407.09259 · arxiv_version: 2407.09259v1 · doi: 10.48550/arxiv.2407.09259 · pith_short_12: W7TMXXQWZPPL · pith_short_16: W7TMXXQWZPPLZMPZ · pith_short_8: W7TMXXQW

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/W7TMXXQWZPPLZMPZHAC7KHE3WG \
  | 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: b7e6cbde16cbdebcb1f93805f51c9bb18c05a688887b2e16c5b6c6064d0220d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb287a8bdff80a023ca3370394ea6e57363d3521c99018e5cd6e214415f4be25",
    "cross_cats_sorted": [
      "cs.SD",
      "eess.AS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2024-07-12T13:41:57Z",
    "title_canon_sha256": "d2f9fe5029fb9de127a0ec341c81753fc24cf21a95f016abfd2fcbd591691150"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2407.09259",
    "kind": "arxiv",
    "version": 1
  }
}