Pith Number

pith:XZXJFYKT

pith:2009:XZXJFYKT2B3XYVYECAKJXTIHXJ

not attested not anchored not stored refs pending

Spiral galaxies with non-typical mass-to-light ratios

A.S. Saburova, A.V. Zasov, E.S. Shaldenkova

arxiv:0906.0284 v1 · 2009-06-01 · 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{XZXJFYKT2B3XYVYECAKJXTIHXJ}

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	2026-05-18T02:13:30.094270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be6e92e153d0777c570410149bcd07ba65f53b20035e4552869c40a9962484d1

Aliases

arxiv: 0906.0284 · arxiv_version: 0906.0284v1 · doi: 10.48550/arxiv.0906.0284 · pith_short_12: XZXJFYKT2B3X · pith_short_16: XZXJFYKT2B3XYVYE · pith_short_8: XZXJFYKT

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/XZXJFYKT2B3XYVYECAKJXTIHXJ \
  | 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: be6e92e153d0777c570410149bcd07ba65f53b20035e4552869c40a9962484d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c6ab28983362e5269ce2685d3bd5b41c62a7555223774ce208c42f80976c7d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-01T13:53:49Z",
    "title_canon_sha256": "fc44e87db9b02758431b22c8408bc29cdab5986326a28ee0e3836ea84b8354fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0284",
    "kind": "arxiv",
    "version": 1
  }
}