Pith Number

pith:W2ED4P7Q

pith:2018:W2ED4P7QDJM6TQKK67QDIWSHCC

not attested not anchored not stored refs pending

Non-convex optimization for 3D point source localization using a rotating point spread function

Chao Wang, Mila Nikolova, Raymond Chan, Robert Plemmons, Sudhakar Prasad

arxiv:1804.04000 v2 · 2018-04-10 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W2ED4P7QDJM6TQKK67QDIWSHCC}

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	2026-05-17T23:43:33.347614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6883e3ff01a59e9c14af7e0345a4710931e1c7e856c575c17af829822e0c419

Aliases

arxiv: 1804.04000 · arxiv_version: 1804.04000v2 · doi: 10.48550/arxiv.1804.04000 · pith_short_12: W2ED4P7QDJM6 · pith_short_16: W2ED4P7QDJM6TQKK · pith_short_8: W2ED4P7Q

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/W2ED4P7QDJM6TQKK67QDIWSHCC \
  | 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: b6883e3ff01a59e9c14af7e0345a4710931e1c7e856c575c17af829822e0c419

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43ff9b00d5ffb520ee7e81813f5baedf1f54ce278b9e3a70b1f62910a5bfb4bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-04-10T09:56:11Z",
    "title_canon_sha256": "43c05823e5c59290ec3b8b9783a75d9ea0268a628a6b1af35b515e2a93599bf4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04000",
    "kind": "arxiv",
    "version": 2
  }
}