Pith Number

pith:IJVQWFWM

pith:2021:IJVQWFWM4FQRXFQJHO7CO2VTTU

not attested not anchored not stored refs pending

Spatial Information Refinement for Chroma Intra Prediction in Video Coding

Chengyi Zou, Luis Herranz, Marc Gorriz Blanch, Marta Mrak, Shuai Wan, Tiannan Ji

arxiv:2109.11913 v1 · 2021-09-24 · cs.MM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IJVQWFWM4FQRXFQJHO7CO2VTTU}

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	2026-07-05T03:17:08.811995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

426b0b16cce1611b96093bbe276ab39d2318b288d81da2b16d771cb8c64872b2

Aliases

arxiv: 2109.11913 · arxiv_version: 2109.11913v1 · doi: 10.48550/arxiv.2109.11913 · pith_short_12: IJVQWFWM4FQR · pith_short_16: IJVQWFWM4FQRXFQJ · pith_short_8: IJVQWFWM

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/IJVQWFWM4FQRXFQJHO7CO2VTTU \
  | 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: 426b0b16cce1611b96093bbe276ab39d2318b288d81da2b16d771cb8c64872b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be1280805eb716c5062600a43da6188f163b31801d85ee8529e1a581cacb533d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MM",
    "submitted_at": "2021-09-24T12:07:49Z",
    "title_canon_sha256": "1cb3a140af1c1d23eebb25ac4d233e122823e980eeb6661d6f36180e375942e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.11913",
    "kind": "arxiv",
    "version": 1
  }
}