Pith Number

pith:4RZHNHX4

pith:2012:4RZHNHX4IGCSKEUYIZGRRBWGON

not attested not anchored not stored refs pending

Image Super-Resolution via Dual-Dictionary Learning And Sparse Representation

Chen Zhao, Debin Zhao, Jian Zhang, Ruiqin Xiong, Siwei Ma

arxiv:1208.3723 v1 · 2012-08-18 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4RZHNHX4IGCSKEUYIZGRRBWGON}

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	2026-05-18T00:57:56.788586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e472769efc4185251298464d1886c673519b6773b9537244e7271ace969173ed

Aliases

arxiv: 1208.3723 · arxiv_version: 1208.3723v1 · doi: 10.48550/arxiv.1208.3723 · pith_short_12: 4RZHNHX4IGCS · pith_short_16: 4RZHNHX4IGCSKEUY · pith_short_8: 4RZHNHX4

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/4RZHNHX4IGCSKEUYIZGRRBWGON \
  | 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: e472769efc4185251298464d1886c673519b6773b9537244e7271ace969173ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc9b75b8cd4d88fef1e6248b34ee221992d6a7f48d257f5068b095ff473e9e7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-08-18T03:00:03Z",
    "title_canon_sha256": "49eae841ece7bd6507b20ee6195be2a5bbcd83171e76b52fb253c7f27be65b46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3723",
    "kind": "arxiv",
    "version": 1
  }
}