Pith Number

pith:G7K4DZR7

pith:2018:G7K4DZR7UHFD46GBTO6OBJPSNV

not attested not anchored not stored refs pending

Dependence of Hall Coefficient on Grain Size and Cosmic Ray Rate and Implication for Circumstellar Disk Formation

Masahiro N. Machida, Satoshi Okuzumi, Shunta Koga, Yusuke Tsukamoto

arxiv:1812.07131 v2 · 2018-12-18 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G7K4DZR7UHFD46GBTO6OBJPSNV}

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	2026-05-17T23:56:44.520626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37d5c1e63fa1ca3e78c19bbce0a5f26d699a61f5474b8e8293b02b1cd084b45c

Aliases

arxiv: 1812.07131 · arxiv_version: 1812.07131v2 · doi: 10.48550/arxiv.1812.07131 · pith_short_12: G7K4DZR7UHFD · pith_short_16: G7K4DZR7UHFD46GB · pith_short_8: G7K4DZR7

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/G7K4DZR7UHFD46GBTO6OBJPSNV \
  | 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: 37d5c1e63fa1ca3e78c19bbce0a5f26d699a61f5474b8e8293b02b1cd084b45c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ffe047ad990f583f7412ae13b6c663f779d658c558bd46343d0c7b4d1b23bbe",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-12-18T01:41:50Z",
    "title_canon_sha256": "2627d1bf6ba88ae5993fef4fd9cfacbcbc8d6d5a644336aa0bd9daffb7217c6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.07131",
    "kind": "arxiv",
    "version": 2
  }
}