Pith Number

pith:YSSZYUZW

pith:2017:YSSZYUZWEAZDHDIY5VUY2QDXGX

not attested not anchored not stored refs pending

New classification method of volcanic ash samples using statistically determined grain types

Hideitsu Hino, Kei Kurita, Nobuo Geshi, Rina Noguchi, Shizuka Otsuki

arxiv:1712.05566 v1 · 2017-12-15 · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YSSZYUZWEAZDHDIY5VUY2QDXGX}

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	2026-05-18T00:27:56.161694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4a59c53362032338d18ed698d407735dba4f684cec74f882345183b705592b1

Aliases

arxiv: 1712.05566 · arxiv_version: 1712.05566v1 · doi: 10.48550/arxiv.1712.05566 · pith_short_12: YSSZYUZWEAZD · pith_short_16: YSSZYUZWEAZDHDIY · pith_short_8: YSSZYUZW

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/YSSZYUZWEAZDHDIY5VUY2QDXGX \
  | 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: c4a59c53362032338d18ed698d407735dba4f684cec74f882345183b705592b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcc4395f427b1151c37e49d42f8fa91c4e8ab2e4b7a8b6f97ca02d56cef1ca80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2017-12-15T07:39:29Z",
    "title_canon_sha256": "d9a28e765df1bfafe8621ac7528ec07d57cd73f3ac9dcde36691cff8b2e905af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05566",
    "kind": "arxiv",
    "version": 1
  }
}