Pith Number

pith:XUPRFMR7

pith:2020:XUPRFMR7OGFQVUTQA33XMMR7XH

not attested not anchored not stored refs pending

Exploiting context dependence for image compression with upsampling

Jarek Duda

arxiv:2004.03391 v3 · 2020-04-06 · eess.IV · cs.LG · cs.MM · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XUPRFMR7OGFQVUTQA33XMMR7XH}

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	2026-07-05T01:18:01.801599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd1f12b23f718b0ad27006f776323fb9fdc79193171b4b5a149969f1265b9dc2

Aliases

arxiv: 2004.03391 · arxiv_version: 2004.03391v3 · doi: 10.48550/arxiv.2004.03391 · pith_short_12: XUPRFMR7OGFQ · pith_short_16: XUPRFMR7OGFQVUTQ · pith_short_8: XUPRFMR7

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/XUPRFMR7OGFQVUTQA33XMMR7XH \
  | 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: bd1f12b23f718b0ad27006f776323fb9fdc79193171b4b5a149969f1265b9dc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15b8f5adb15ae1588f02b71b50bf94281fe3e70fddb1831582456c96a5529ed2",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.MM",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2020-04-06T14:37:04Z",
    "title_canon_sha256": "f55c6dc2a12101e17c88fae41a9cd28d0472aee098a9be1b7cc648b89faff2a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03391",
    "kind": "arxiv",
    "version": 3
  }
}