Pith Number

pith:KKAQSEH6

pith:2016:KKAQSEH6U7JIQI7MONFTEULSIR

not attested not anchored not stored refs pending

A normal supermassive black hole in NGC 1277

Alister W. Graham, A. Marconi, Anne M. Medling, Beverly Watson, D. Batcheldor, Giulia A. D. Savorgnan, Mark Durr\'e, Nicholas Scott

arxiv:1601.05151 v2 · 2016-01-20 · 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{KKAQSEH6U7JIQI7MONFTEULSIR}

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	2026-05-18T01:19:01.282566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52810910fea7d28823ec734b32517244723ad2be0c157bc398ecc6e01ae527f1

Aliases

arxiv: 1601.05151 · arxiv_version: 1601.05151v2 · doi: 10.48550/arxiv.1601.05151 · pith_short_12: KKAQSEH6U7JI · pith_short_16: KKAQSEH6U7JIQI7M · pith_short_8: KKAQSEH6

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/KKAQSEH6U7JIQI7MONFTEULSIR \
  | 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: 52810910fea7d28823ec734b32517244723ad2be0c157bc398ecc6e01ae527f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2b752965067157ef59360889a60f7d7d72feeaebcc364ba0dd34ef0478e608a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-01-20T02:21:15Z",
    "title_canon_sha256": "1a3b60a52ac4af0f6fe309adb4e6cf6ac57e066eaca415909f307828f2d5c4e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.05151",
    "kind": "arxiv",
    "version": 2
  }
}