Pith Number

pith:NUQC2V5R

pith:2015:NUQC2V5RFQJB3VWLEX6DVQKAF6

not attested not anchored not stored refs pending

SPRIGHT: A Fast and Robust Framework for Sparse Walsh-Hadamard Transform

Joseph K. Bradley, Kannan Ramchandran, Sameer Pawar, Xiao Li

arxiv:1508.06336 v1 · 2015-08-26 · cs.IT · cs.LG · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NUQC2V5RFQJB3VWLEX6DVQKAF6}

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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	2026-05-18T01:34:43.270959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d202d57b12c121dd6cb25fc3ac1402fa6b3e0dfe7e59e700f38c2467202f5df

Aliases

arxiv: 1508.06336 · arxiv_version: 1508.06336v1 · doi: 10.48550/arxiv.1508.06336 · pith_short_12: NUQC2V5RFQJB · pith_short_16: NUQC2V5RFQJB3VWL · pith_short_8: NUQC2V5R

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/NUQC2V5RFQJB3VWLEX6DVQKAF6 \
  | 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: 6d202d57b12c121dd6cb25fc3ac1402fa6b3e0dfe7e59e700f38c2467202f5df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77034472d3a73bfe6fec9e5b4e8543beea5cbb95344111180834e3c32ec979cd",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-08-26T00:34:30Z",
    "title_canon_sha256": "be8a5cd7098bb8026779e50a4f51b99d0ee346ec2d8932d5ab352b677a587053"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.06336",
    "kind": "arxiv",
    "version": 1
  }
}