Pith Number

pith:KMYPZRBT

pith:2009:KMYPZRBTN57EI6GJCU3T2YUJFG

not attested not anchored not stored refs pending

Compressed Blind De-convolution

M. Zhao, V. Saligrama

arxiv:0910.0239 v2 · 2009-10-01 · 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{KMYPZRBTN57EI6GJCU3T2YUJFG}

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	2026-05-18T01:04:59.739017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5330fcc4336f7e4478c915373d628929ab606b298d2bd1754e8bd842ffd9f5c8

Aliases

arxiv: 0910.0239 · arxiv_version: 0910.0239v2 · doi: 10.48550/arxiv.0910.0239 · pith_short_12: KMYPZRBTN57E · pith_short_16: KMYPZRBTN57EI6GJ · pith_short_8: KMYPZRBT

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/KMYPZRBTN57EI6GJCU3T2YUJFG \
  | 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: 5330fcc4336f7e4478c915373d628929ab606b298d2bd1754e8bd842ffd9f5c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8bb2fc6e6e27d31db9f0c1961df93c9d3d1fcac44ce0b850f5ef356fe4638b52",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-10-01T19:49:36Z",
    "title_canon_sha256": "8cbce031282d332aa715d0845f4f768828d0879b1a99b41390552b5f27af73a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0239",
    "kind": "arxiv",
    "version": 2
  }
}