Pith Number

pith:OGKHLR64

pith:2026:OGKHLR647PDAIA7VVVD5A4XNZU

not attested not anchored not stored refs pending

When the Shadow Meets Its Measure: Assessing the Feasibility of Submillimeter Black Hole Shadow Imaging in Megamaser Disk AGN

Geoffrey C. Bower, Roman N. Burridge

arxiv:2601.01763 v3 · 2026-01-05 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OGKHLR647PDAIA7VVVD5A4XNZU}

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	2026-06-12T01:09:19.591004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

719475c7dcfbc60403f5ad47d072edcd2cc18ed899d203afd7bc0a716df65276

Aliases

arxiv: 2601.01763 · arxiv_version: 2601.01763v3 · doi: 10.48550/arxiv.2601.01763 · pith_short_12: OGKHLR647PDA · pith_short_16: OGKHLR647PDAIA7V · pith_short_8: OGKHLR64

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/OGKHLR647PDAIA7VVVD5A4XNZU \
  | 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: 719475c7dcfbc60403f5ad47d072edcd2cc18ed899d203afd7bc0a716df65276

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60b29b02229f40311b8cbb99e1532ce136f4e5f6da6c2141a561cecbe8cccebc",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-01-05T03:43:10Z",
    "title_canon_sha256": "84fe4eab58b040c6ec14fdbde079e2c20f7bae6355d05baf205d6daea74c0f23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.01763",
    "kind": "arxiv",
    "version": 3
  }
}