Pith Number

pith:F3FPEQ3Y

pith:2001:F3FPEQ3YSKHIUBUNCGFKKYE5MP

not attested not anchored not stored refs pending

Hubble Constant at Intermediate Redshift using the CO-Line Tully-Fisher Relation

K. Wakamatsu, M. Honma, T. Ichikawa, Y. Sofue, Y. Tutui

arxiv:astro-ph/0108462 v1 · 2001-08-29 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F3FPEQ3YSKHIUBUNCGFKKYE5MP}

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	2026-05-18T01:40:44.213691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ecaf24378928e8a068d118aa5609d63c8bb9431a94ea22bb4c9ed2d3bec9c87

Aliases

arxiv: astro-ph/0108462 · arxiv_version: astro-ph/0108462v1 · doi: 10.48550/arxiv.astro-ph/0108462 · pith_short_12: F3FPEQ3YSKHI · pith_short_16: F3FPEQ3YSKHIUBUN · pith_short_8: F3FPEQ3Y

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/F3FPEQ3YSKHIUBUNCGFKKYE5MP \
  | 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: 2ecaf24378928e8a068d118aa5609d63c8bb9431a94ea22bb4c9ed2d3bec9c87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e1f0affcfd269e00c0da506f7736174503e26592b23916b1a0b647b02f96238",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-29T05:22:02Z",
    "title_canon_sha256": "9d41c3b5b1354d5bd3556435aec3421044671d981b5f75bec10fa87ee22a59e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108462",
    "kind": "arxiv",
    "version": 1
  }
}