Pith Number

pith:PEUBHDDK

pith:2020:PEUBHDDKF4YLKX4ACUWMCODE6I

not attested not anchored not stored refs pending

Sparse Matrix-Based HPC Tomography

(2) Virginia Polytechnic Institute, (3) Computational Research Division, (4) Advanced Light Source, Anuradha Trivedi (2), Dilworth Parkinson (4) ((1) Sigray, Inc., Lawrence Berkeley National Laboratory, Lawrence Berkeley National Laboratory), Pablo Enfedaque (3), State University, Stefano Marchesini (1), Talita Perciano (3)

arxiv:2003.12677 v2 · 2020-03-28 · 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{PEUBHDDKF4YLKX4ACUWMCODE6I}

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	2026-07-05T02:01:44.186445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7928138c6a2f30b55f80152cc13864f209d272d81487f2aa89554cd6e31a8b96

Aliases

arxiv: 2003.12677 · arxiv_version: 2003.12677v2 · doi: 10.48550/arxiv.2003.12677 · pith_short_12: PEUBHDDKF4YL · pith_short_16: PEUBHDDKF4YLKX4A · pith_short_8: PEUBHDDK

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/PEUBHDDKF4YLKX4ACUWMCODE6I \
  | 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: 7928138c6a2f30b55f80152cc13864f209d272d81487f2aa89554cd6e31a8b96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a861872ab0d94c9acf2e8995e2b636731a3ba660bce83e03b5259cd4b7f39758",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2020-03-28T01:20:15Z",
    "title_canon_sha256": "78f3caab3c0db16e3c13167ddf8a2052a49890056f17140a9522da818d4d8038"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.12677",
    "kind": "arxiv",
    "version": 2
  }
}