Pith Number

pith:KNXT2BH6

pith:2012:KNXT2BH6OZR7BO4TCNSWXRC5AI

not attested not anchored not stored refs pending

Cosmology and the Hubble Constant: On the Megamaser Cosmology Project (MCP)

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

arxiv:1205.0823 v1 · 2012-05-03 · 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{KNXT2BH6OZR7BO4TCNSWXRC5AI}

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	2026-05-18T01:57:38.217071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

536f3d04fe7663f0bb9313656bc45d022157fbd9b20030eb7400d6979c560ea5

Aliases

arxiv: 1205.0823 · arxiv_version: 1205.0823v1 · doi: 10.48550/arxiv.1205.0823 · pith_short_12: KNXT2BH6OZR7 · pith_short_16: KNXT2BH6OZR7BO4T · pith_short_8: KNXT2BH6

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/KNXT2BH6OZR7BO4TCNSWXRC5AI \
  | 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: 536f3d04fe7663f0bb9313656bc45d022157fbd9b20030eb7400d6979c560ea5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "952052e4f61517ad99bdc2e1fcd054914504913b8f04dbf8f452ea321b730dc0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-03T21:04:27Z",
    "title_canon_sha256": "c9ecfe26c9a8c28274c0f1973ec871304be6481feaaac51e7c314acbe0324db2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.0823",
    "kind": "arxiv",
    "version": 1
  }
}