Pith Number

pith:P5EM5JEX

pith:2025:P5EM5JEX7WPT5GIKXCEMJKPXLI

not attested not anchored not stored refs pending

Candidate intermediate-mass black hole discovered in an extremely young low-metallicity cluster in the tadpole galaxy KUG 1138+327

Juergen Ott, Q. Daniel Wang

arxiv:2502.07304 v1 · 2025-02-11 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P5EM5JEX7WPT5GIKXCEMJKPXLI}

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	2026-07-05T10:12:35.753407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f48cea497fd9f3e990ab888c4a9f75a3d73a67c345b7461b813fe9de0a95639

Aliases

arxiv: 2502.07304 · arxiv_version: 2502.07304v1 · doi: 10.48550/arxiv.2502.07304 · pith_short_12: P5EM5JEX7WPT · pith_short_16: P5EM5JEX7WPT5GIK · pith_short_8: P5EM5JEX

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/P5EM5JEX7WPT5GIKXCEMJKPXLI \
  | 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: 7f48cea497fd9f3e990ab888c4a9f75a3d73a67c345b7461b813fe9de0a95639

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "440d3f95284c8e8d953e6b0de6d1d1697a6c1185b6ac36cb6dc3d04e5ac0cdf1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-02-11T07:05:58Z",
    "title_canon_sha256": "71e207a089ff1050e559788f176f7c3098b502128fa4df220de65d001d07acf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.07304",
    "kind": "arxiv",
    "version": 1
  }
}