Pith Number

pith:NZERH2RA

pith:2011:NZERH2RAQGYQ62CUYLD4E37Y5A

not attested not anchored not stored refs pending

Optical Properties of Host Galaxies of Extragalactic Nuclear Water Masers

Guangtun Zhu, Ingyin Zaw, Lincoln J. Greenhill (Harvard), Michael R. Blanton (NYU)

arxiv:1108.3348 v1 · 2011-08-16 · 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{NZERH2RAQGYQ62CUYLD4E37Y5A}

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	2026-05-18T02:00:53.067022Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e4913ea2081b10f6854c2c7c26ff8e8186cea684f3ee5cc6dcf8f23463f848f

Aliases

arxiv: 1108.3348 · arxiv_version: 1108.3348v1 · doi: 10.48550/arxiv.1108.3348 · pith_short_12: NZERH2RAQGYQ · pith_short_16: NZERH2RAQGYQ62CU · pith_short_8: NZERH2RA

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/NZERH2RAQGYQ62CUYLD4E37Y5A \
  | 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: 6e4913ea2081b10f6854c2c7c26ff8e8186cea684f3ee5cc6dcf8f23463f848f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02846d45069e37666d7f16e573fd78f60e4eb5b5a02072d51f9f9a87963b5ecf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-16T20:30:47Z",
    "title_canon_sha256": "6504b43d2d1c8d08ad45ddcf03e87280ee7a0e4aaf75933e289715876bce4f5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3348",
    "kind": "arxiv",
    "version": 1
  }
}