Pith Number

pith:SEYX6EAQ

pith:2016:SEYX6EAQSISDFHJWO2KLMNKBHA

not attested not anchored not stored refs pending

Megamaser Disks Reveal a Broad Distribution of Black Hole Mass in Spiral Galaxies

Andy D. Goulding, Anil C. Seth, Christian Henkel, Feng Gao, Fred K. Y. Lo, James A. Braatz, James Condon, Jenny E. Greene, Minjin Kim, Ronald Laesker, Wei Zhao

arxiv:1606.00018 v2 · 2016-05-31 · 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{SEYX6EAQSISDFHJWO2KLMNKBHA}

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	2026-05-18T01:07:58.011948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91317f10109224329d367694b6354138334cf859b4b561c206efb4772335826c

Aliases

arxiv: 1606.00018 · arxiv_version: 1606.00018v2 · doi: 10.48550/arxiv.1606.00018 · pith_short_12: SEYX6EAQSISD · pith_short_16: SEYX6EAQSISDFHJW · pith_short_8: SEYX6EAQ

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/SEYX6EAQSISDFHJWO2KLMNKBHA \
  | 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: 91317f10109224329d367694b6354138334cf859b4b561c206efb4772335826c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37583ab73de3bf17744abc2258ea094b0a6181275b6dff3cc1ceb33d0b0ad903",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-05-31T20:00:37Z",
    "title_canon_sha256": "d6d8e5d19ceffc6efccca00e05be6bde78786ab0be86d7f450d109290d2624d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.00018",
    "kind": "arxiv",
    "version": 2
  }
}