Pith Number

pith:MHFGJ4D2

pith:2020:MHFGJ4D2AIPVOKLGQJO3ZC7RRQ

not attested not anchored not stored refs pending

Learning to Structure an Image with Few Colors

Liang Zheng, Stephen Gould, Yunzhong Hou

arxiv:2003.07848 v2 · 2020-03-17 · 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{MHFGJ4D2AIPVOKLGQJO3ZC7RRQ}

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	2026-07-05T02:39:00.988594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61ca64f07a021f572966825dbc8bf18c3778915369f92d09c00bd14f8f6d88ad

Aliases

arxiv: 2003.07848 · arxiv_version: 2003.07848v2 · doi: 10.48550/arxiv.2003.07848 · pith_short_12: MHFGJ4D2AIPV · pith_short_16: MHFGJ4D2AIPVOKLG · pith_short_8: MHFGJ4D2

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/MHFGJ4D2AIPVOKLGQJO3ZC7RRQ \
  | 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: 61ca64f07a021f572966825dbc8bf18c3778915369f92d09c00bd14f8f6d88ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33fdfaa8f551025d351104f23d3587a9d7a4fd9015e0c5bbe41b7b4c71df1c0f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-03-17T17:56:15Z",
    "title_canon_sha256": "f82b9a742ddbde021866065104aa612ab43ec9dd95cdc593c7da4eca3006b318"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.07848",
    "kind": "arxiv",
    "version": 2
  }
}