Pith Number

pith:4U4D6VFP

pith:2009:4U4D6VFPIEAQWTDYKNR4FXFVEF

not attested not anchored not stored refs pending

Southern GEMS groups II: HI distribution, mass functions and HI deficient galaxies

Baerbel S. Koribalski, David G. Barnes, Duncan A. Forbes, Katie Kern, Sarah Brough, Virginia A. Kilborn

arxiv:0909.0568 v1 · 2009-09-03 · 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{4U4D6VFPIEAQWTDYKNR4FXFVEF}

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	2026-05-18T02:12:00.458268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5383f54af41010b4c785363c2dcb5215d4b34ca468cf9be3399f060f80196cc

Aliases

arxiv: 0909.0568 · arxiv_version: 0909.0568v1 · doi: 10.48550/arxiv.0909.0568 · pith_short_12: 4U4D6VFPIEAQ · pith_short_16: 4U4D6VFPIEAQWTDY · pith_short_8: 4U4D6VFP

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/4U4D6VFPIEAQWTDYKNR4FXFVEF \
  | 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: e5383f54af41010b4c785363c2dcb5215d4b34ca468cf9be3399f060f80196cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dcfbde18330d7c735f3024b61661792d84bce5f36642404f0c261709b3c151d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-03T03:50:51Z",
    "title_canon_sha256": "493afa871128d4daa62715618780b50349125fa03d93f0cdd1bd86091c1b59e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0568",
    "kind": "arxiv",
    "version": 1
  }
}