Pith Number

pith:TXWWXEAI

pith:2025:TXWWXEAI3JBANDCUEEJEHOAKR4

not attested not anchored not stored refs pending

Supermassive black hole in NGC 4649 (M60) with a dark matter halo: Impact on shadow measurements and thermodynamic properties

Francisco S. N. Lobo, Jorde A. A. Ramos, Manuel E. Rodrigues

arxiv:2505.03661 v1 · 2025-05-06 · gr-qc · astro-ph.HE · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TXWWXEAI3JBANDCUEEJEHOAKR4}

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	2026-07-05T12:08:02.755454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ded6b9008da42068c54211243b80a8f2febe271ad3f3ef9bbe06659ba302a6b

Aliases

arxiv: 2505.03661 · arxiv_version: 2505.03661v1 · doi: 10.48550/arxiv.2505.03661 · pith_short_12: TXWWXEAI3JBA · pith_short_16: TXWWXEAI3JBANDCU · pith_short_8: TXWWXEAI

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/TXWWXEAI3JBANDCUEEJEHOAKR4 \
  | 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: 9ded6b9008da42068c54211243b80a8f2febe271ad3f3ef9bbe06659ba302a6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bbea97247bfc20201e6c8a55fd8e61587c0b563a78a3002d74d3854ff3dab8d",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-05-06T16:05:12Z",
    "title_canon_sha256": "9525dd9f5bcd492bb5cacc55be880a619a89e449b572c5ec0b92f6144fcd8824"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.03661",
    "kind": "arxiv",
    "version": 1
  }
}