Pith Number

pith:KPZZC4VL

pith:2022:KPZZC4VLKYNPH3IDEP6FDTB2CD

not attested not anchored not stored refs pending

Learning to Sieve: Prediction of Grading Curves from Images of Concrete Aggregate

Christian Heipke, Dries Beyer, Max Coenen, Michael Haist

arxiv:2204.03333 v1 · 2022-04-07 · 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{KPZZC4VLKYNPH3IDEP6FDTB2CD}

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	2026-07-05T04:27:12.691993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53f39172ab561af3ed0323fc51cc3a10d98e9ecb19041e3b6f68055eba3a4ba6

Aliases

arxiv: 2204.03333 · arxiv_version: 2204.03333v1 · doi: 10.48550/arxiv.2204.03333 · pith_short_12: KPZZC4VLKYNP · pith_short_16: KPZZC4VLKYNPH3ID · pith_short_8: KPZZC4VL

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/KPZZC4VLKYNPH3IDEP6FDTB2CD \
  | 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: 53f39172ab561af3ed0323fc51cc3a10d98e9ecb19041e3b6f68055eba3a4ba6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4335aeeb22cf1dcb54f992ecff2fcfa656773c71fd15ebed31eb46c4ab9ddfd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-04-07T10:04:05Z",
    "title_canon_sha256": "4e9f3c558933a2c545f65eef9ce9379db4d0c00c29b6eab55064cd07d7a275e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.03333",
    "kind": "arxiv",
    "version": 1
  }
}