Pith Number

pith:LYHXFAAQ

pith:2012:LYHXFAAQXGVRODVERUAAKDZFL6

not attested not anchored not stored refs pending

The Megamaser Cosmology Project: IV. A Direct Measurement of the Hubble Constant from UGC 3789

C. Henkel, C. M. V. Impellizzeri, C. Y. Kuo, J. A. Braatz, J. J. Condon, K. Y. Lo, M. J. Reid

arxiv:1207.7292 v2 · 2012-07-31 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LYHXFAAQXGVRODVERUAAKDZFL6}

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	2026-05-18T01:56:00.627913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e0f728010b9ab170ea48d00050f255f81243d78f97a1c61588c36a68b3e6c28

Aliases

arxiv: 1207.7292 · arxiv_version: 1207.7292v2 · doi: 10.48550/arxiv.1207.7292 · pith_short_12: LYHXFAAQXGVR · pith_short_16: LYHXFAAQXGVRODVE · pith_short_8: LYHXFAAQ

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/LYHXFAAQXGVRODVERUAAKDZFL6 \
  | 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: 5e0f728010b9ab170ea48d00050f255f81243d78f97a1c61588c36a68b3e6c28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b152bc67ec8f2e05c6a39e71f9e9259ce58ebe1088966bf1b71ba7b77512aa2e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-31T15:37:37Z",
    "title_canon_sha256": "aeb6b9e2731ced25d88806e8139f471a1ff4a27ac2f24b90522f1b554b3bf825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.7292",
    "kind": "arxiv",
    "version": 2
  }
}