Pith Number

pith:77W3BQ7C

pith:2017:77W3BQ7C6VJASWIATYY63DZDIM

not attested not anchored not stored refs pending

Shape recognition of volcanic ash by simple convolutional neural network

Daigo Shoji, Rina Noguchi

arxiv:1706.07178 v1 · 2017-06-22 · physics.geo-ph · 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{77W3BQ7C6VJASWIATYY63DZDIM}

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	2026-05-18T00:41:52.436719Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffedb0c3e2f5520959009e31ed8f234334004bbdcf395e359412aa9c55788e0d

Aliases

arxiv: 1706.07178 · arxiv_version: 1706.07178v1 · doi: 10.48550/arxiv.1706.07178 · pith_short_12: 77W3BQ7C6VJA · pith_short_16: 77W3BQ7C6VJASWIA · pith_short_8: 77W3BQ7C

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/77W3BQ7C6VJASWIATYY63DZDIM \
  | 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: ffedb0c3e2f5520959009e31ed8f234334004bbdcf395e359412aa9c55788e0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c2e4ff1ef0df8aac362f41a3f6fe0e02705dacd983a46cf10a5e018c3f8b9ba",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2017-06-22T06:53:19Z",
    "title_canon_sha256": "4c2d479521c36e321ef8c5063ca548176fdcf56759e1d094535c53717923dc20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.07178",
    "kind": "arxiv",
    "version": 1
  }
}