Pith Number

pith:Q4BCXV2L

pith:2022:Q4BCXV2LWQ2AWA4RXNPNZG2LOM

not attested not anchored not stored refs pending

Low-rank flat-field correction for artifact reduction in spectral computed tomography

Evelina Ametova, Genoveva Burca, Jakob S J{\o}rgensen, Katrine O Bangsgaard, Martin S Andersen

arxiv:2203.01637 v1 · 2022-03-03 · math.NA · cs.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4BCXV2LWQ2AWA4RXNPNZG2LOM}

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	2026-07-05T04:01:50.166143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87022bd74bb4340b0391bb5edc9b4b732f845a14003d9f4b7cdf9518e85a0344

Aliases

arxiv: 2203.01637 · arxiv_version: 2203.01637v1 · doi: 10.48550/arxiv.2203.01637 · pith_short_12: Q4BCXV2LWQ2A · pith_short_16: Q4BCXV2LWQ2AWA4R · pith_short_8: Q4BCXV2L

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/Q4BCXV2LWQ2AWA4RXNPNZG2LOM \
  | 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: 87022bd74bb4340b0391bb5edc9b4b732f845a14003d9f4b7cdf9518e85a0344

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6744b2d6bc111f142e5ac25d832884b82810c48847204305f5ca1a433327958c",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-03-03T10:55:52Z",
    "title_canon_sha256": "4167d6350ccfbbaa648be4f368a4590f4fda371f04a3081182c57e5e5be26a6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.01637",
    "kind": "arxiv",
    "version": 1
  }
}