Pith Number

pith:5ODC5UGK

pith:2020:5ODC5UGKL5QXR6GFXM2OT5XPAD

not attested not anchored not stored refs pending

Efficient Tuning-Free $\ell_1$-Regression of Nonnegative Compressible Signals

Bubacarr Bah, Hendrik Bernd Petersen, Peter Jung

arxiv:2003.13092 v2 · 2020-03-29 · cs.IT · math.IT · math.OC · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5ODC5UGKL5QXR6GFXM2OT5XPAD}

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	2026-07-05T01:40:25.509682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb862ed0ca5f6178f8c5bb34e9f6ef00fd266d5f0f1c3ef6e946ee0eeb9792c7

Aliases

arxiv: 2003.13092 · arxiv_version: 2003.13092v2 · doi: 10.48550/arxiv.2003.13092 · pith_short_12: 5ODC5UGKL5QX · pith_short_16: 5ODC5UGKL5QXR6GF · pith_short_8: 5ODC5UGK

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/5ODC5UGKL5QXR6GFXM2OT5XPAD \
  | 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: eb862ed0ca5f6178f8c5bb34e9f6ef00fd266d5f0f1c3ef6e946ee0eeb9792c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f56017674731ba1a7e686690314a074536ba45b8cf810875f3926d6f63e99a5",
    "cross_cats_sorted": [
      "math.IT",
      "math.OC",
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2020-03-29T18:03:45Z",
    "title_canon_sha256": "e7f82bdbc55cd2f4e6b05ae3d5f55187deb389670709dcd7b745f985ffc499af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.13092",
    "kind": "arxiv",
    "version": 2
  }
}