Pith Number

pith:6ZOWN6BE

pith:2009:6ZOWN6BEOQWWQYZDEGVBYFULR5

not attested not anchored not stored refs pending

Setting the normalcy level of HI properties in isolated galaxies

A. Bosma, D. Espada, E. Athanassoula, J. Sabater, J. Sulentic, L. Verdes-Montenegro, M. Yun, S. Leon, S. Verley, U. Lisenfeld, W. K. Huchtmeier

arxiv:0909.2736 v1 · 2009-09-15 · 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{6ZOWN6BEOQWWQYZDEGVBYFULR5}

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	2026-07-04T15:49:43.773400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f65d66f824742d68632321aa1c168b8f4972ccbad24f4ad5752f5cf436c7d91d

Aliases

arxiv: 0909.2736 · arxiv_version: 0909.2736v1 · doi: 10.48550/arxiv.0909.2736 · pith_short_12: 6ZOWN6BEOQWW · pith_short_16: 6ZOWN6BEOQWWQYZD · pith_short_8: 6ZOWN6BE

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/6ZOWN6BEOQWWQYZDEGVBYFULR5 \
  | 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: f65d66f824742d68632321aa1c168b8f4972ccbad24f4ad5752f5cf436c7d91d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f052bff8f0f58ad9da31f585a4375f35c785850c19a6f129ab41cf7ef89a6091",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-15T08:01:43Z",
    "title_canon_sha256": "116e664f6e628e09cc7abc45193479332c7cbe63e66ec2f9108c48f4f59dee48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2736",
    "kind": "arxiv",
    "version": 1
  }
}