Pith Number

pith:7AXNSDU2

pith:2022:7AXNSDU2HOQNL6YH6O2UJF3FUJ

not attested not anchored not stored refs pending

Recovery Conditions of Sparse Signals Using Orthogonal Least Squares-Type Algorithms

L. Lu, W. Xu, Y. Wang, Z. Tian

arxiv:2201.04914 v2 · 2022-01-13 · 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{7AXNSDU2HOQNL6YH6O2UJF3FUJ}

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	2026-07-05T05:05:45.004408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f82ed90e9a3ba0d5fb07f3b5449765a26be54c4ddda4185adb71f178821a9bd8

Aliases

arxiv: 2201.04914 · arxiv_version: 2201.04914v2 · doi: 10.48550/arxiv.2201.04914 · pith_short_12: 7AXNSDU2HOQN · pith_short_16: 7AXNSDU2HOQNL6YH · pith_short_8: 7AXNSDU2

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/7AXNSDU2HOQNL6YH6O2UJF3FUJ \
  | 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: f82ed90e9a3ba0d5fb07f3b5449765a26be54c4ddda4185adb71f178821a9bd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d82567ef560971ceacf5be7fbbac09653019e22c38988d8d41551f6a256e28e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2022-01-13T12:11:18Z",
    "title_canon_sha256": "a4dc9914b2e9cfd423db008e6ecfa6ccf77012660606b823b8c9ee8cbc3e938b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.04914",
    "kind": "arxiv",
    "version": 2
  }
}