Pith Number

pith:KZZK4D5A

pith:2014:KZZK4D5A5O25ZHY6LT23CC2RPU

not attested not anchored not stored refs pending

Fast Sublinear Sparse Representation using Shallow Tree Matching Pursuit

Ali Ayremlou, Ashok Veeraraghavan, Richard Baraniuk, Thomas Goldstein

arxiv:1412.0680 v1 · 2014-12-01 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KZZK4D5A5O25ZHY6LT23CC2RPU}

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	2026-05-18T02:32:21.419034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5672ae0fa0ebb5dc9f1e5cf5b10b517d0d4445394b6cb22cb4aa7dfe90416726

Aliases

arxiv: 1412.0680 · arxiv_version: 1412.0680v1 · doi: 10.48550/arxiv.1412.0680 · pith_short_12: KZZK4D5A5O25 · pith_short_16: KZZK4D5A5O25ZHY6 · pith_short_8: KZZK4D5A

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/KZZK4D5A5O25ZHY6LT23CC2RPU \
  | 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: 5672ae0fa0ebb5dc9f1e5cf5b10b517d0d4445394b6cb22cb4aa7dfe90416726

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b99366156073874db1c81565daae87e634e9a957430b9d185385f13e95849df1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-12-01T21:08:37Z",
    "title_canon_sha256": "b8717a6c60e747e60aa376e7cb9af6c36eafb33788880176b21b0554aeb551f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.0680",
    "kind": "arxiv",
    "version": 1
  }
}