Pith Number

pith:YXDUYV2T

pith:2009:YXDUYV2TXC5JEZ7FXCX7YNLZ76

not attested not anchored not stored refs pending

The Smith Cloud: high-velocity accretion and dark-matter confinement

J. Bland-Hawthorn, M. Nichols

arxiv:0911.0684 v1 · 2009-11-03 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YXDUYV2TXC5JEZ7FXCX7YNLZ76}

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	2026-05-18T02:34:12.013268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5c74c5753b8ba9267e5b8affc3579ff98fb4c1a6813c9569cf5f63908816530

Aliases

arxiv: 0911.0684 · arxiv_version: 0911.0684v1 · doi: 10.48550/arxiv.0911.0684 · pith_short_12: YXDUYV2TXC5J · pith_short_16: YXDUYV2TXC5JEZ7F · pith_short_8: YXDUYV2T

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/YXDUYV2TXC5JEZ7FXCX7YNLZ76 \
  | 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: c5c74c5753b8ba9267e5b8affc3579ff98fb4c1a6813c9569cf5f63908816530

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d730c831e38adf9de050ccc32d6056b268677f8f47c6c6a61dd43c93db08b109",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-03T21:05:03Z",
    "title_canon_sha256": "8162b4419e3750810f4005ea95cb93c25707b7a3a1df0cea9f7a54b70f6f228c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0684",
    "kind": "arxiv",
    "version": 1
  }
}