Pith Number

pith:O4NXVFZ4

pith:2018:O4NXVFZ4AE7BS52P5MCP3G2FUZ

not attested not anchored not stored refs pending

The Megamaser Cosmology Project. X. High Resolution Maps and Mass Constraint for SMBHs

C. Henkel, C. M. V. Impellizzeri, C. Y. Kuo, D. W. Pesce, F. Gao, J. A. Braatz, J. E. Greene, J. J. Condon, K. Y. Lo, M. J. Reid, W. Zhao

arxiv:1801.06332 v1 · 2018-01-19 · astro-ph.GA · 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{O4NXVFZ4AE7BS52P5MCP3G2FUZ}

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	2026-05-18T00:22:23.044509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

771b7a973c013e19774feb04fd9b45a659c9ea1424928a4e8615c32fa2a68e87

Aliases

arxiv: 1801.06332 · arxiv_version: 1801.06332v1 · doi: 10.48550/arxiv.1801.06332 · pith_short_12: O4NXVFZ4AE7B · pith_short_16: O4NXVFZ4AE7BS52P · pith_short_8: O4NXVFZ4

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/O4NXVFZ4AE7BS52P5MCP3G2FUZ \
  | 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: 771b7a973c013e19774feb04fd9b45a659c9ea1424928a4e8615c32fa2a68e87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97d8db14cba727cc7369c605ded151cfe09b4b7ab456ed986dd05b0acd742204",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-19T08:51:31Z",
    "title_canon_sha256": "ef0382a261d5212be73d7aa510e2e60e2e071d04a580edd51c394a680af40385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06332",
    "kind": "arxiv",
    "version": 1
  }
}