Pith Number

pith:IUDGJMFD

pith:2012:IUDGJMFDT4VNOUUCCCKBGEJGVR

not attested not anchored not stored refs pending

Efficient Recovery of Block Sparse Signals via Zero-point Attracting Projection

Jian Jin, Jingbo Liu, Yuantao Gu

arxiv:1203.1714 v1 · 2012-03-08 · cs.IT · 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{IUDGJMFDT4VNOUUCCCKBGEJGVR}

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	2026-05-18T04:00:37.199412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

450664b0a39f2ad752821094131126ac671f755c98cdd8cb8cd4d40b14a4d52f

Aliases

arxiv: 1203.1714 · arxiv_version: 1203.1714v1 · doi: 10.48550/arxiv.1203.1714 · pith_short_12: IUDGJMFDT4VN · pith_short_16: IUDGJMFDT4VNOUUC · pith_short_8: IUDGJMFD

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/IUDGJMFDT4VNOUUCCCKBGEJGVR \
  | 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: 450664b0a39f2ad752821094131126ac671f755c98cdd8cb8cd4d40b14a4d52f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b03321cd95b1acb8d8ea946c1ac89fa525d6fde9d74cb1de076bec3f79070c7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-03-08T09:18:36Z",
    "title_canon_sha256": "4d6f07b6a474194963a1c8eb122960d618ed49859038235ac200c8f6adbc9d03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1714",
    "kind": "arxiv",
    "version": 1
  }
}