Pith Number

pith:V2IX3MSS

pith:2019:V2IX3MSSTVPJLED6Q2NOQUUV5L

not attested not anchored not stored refs pending

Block stochastic gradient descent for large-scale tomographic reconstruction in a parallel network

Ander Biguri, Thomas Blumensath, Yushan Gao

arxiv:1903.11874 v1 · 2019-03-28 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V2IX3MSSTVPJLED6Q2NOQUUV5L}

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	2026-05-17T23:49:58.846571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae917db2529d5e95907e869ae85295ead2d8a2bee0ec1a0ff5c86b92ba0fc8bb

Aliases

arxiv: 1903.11874 · arxiv_version: 1903.11874v1 · doi: 10.48550/arxiv.1903.11874 · pith_short_12: V2IX3MSSTVPJ · pith_short_16: V2IX3MSSTVPJLED6 · pith_short_8: V2IX3MSS

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/V2IX3MSSTVPJLED6Q2NOQUUV5L \
  | 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: ae917db2529d5e95907e869ae85295ead2d8a2bee0ec1a0ff5c86b92ba0fc8bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "512f36aea0696dbb9948c0eb84a218e5603eeebb1bb64164eedf9a78d4a22429",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2019-03-28T10:10:27Z",
    "title_canon_sha256": "cbe25f384a33febedb9b2fb6e012a0ef184785c0ab0e0b7bc56ba92c5e7688d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11874",
    "kind": "arxiv",
    "version": 1
  }
}