Pith Number

pith:FJMK3WA5

pith:2021:FJMK3WA5MN6WM7ARAAZBUJJ6YJ

not attested not anchored not stored refs pending

Constraining the KRZ deformation parameters I: limits from supermassive black hole X-ray data

Ashutosh Tripathi, Askar B. Abdikamalov, Cosimo Bambi, Dimitry Ayzenberg, Sourabh Nampalliwar

arxiv:2104.04183 v2 · 2021-04-09 · astro-ph.HE · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FJMK3WA5MN6WM7ARAAZBUJJ6YJ}

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	2026-07-05T03:00:32.749327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a58add81d637d667c1100321a253ec264d723718dcbf2a0e2685337759d54ba

Aliases

arxiv: 2104.04183 · arxiv_version: 2104.04183v2 · doi: 10.48550/arxiv.2104.04183 · pith_short_12: FJMK3WA5MN6W · pith_short_16: FJMK3WA5MN6WM7AR · pith_short_8: FJMK3WA5

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/FJMK3WA5MN6WM7ARAAZBUJJ6YJ \
  | 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: 2a58add81d637d667c1100321a253ec264d723718dcbf2a0e2685337759d54ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df45bb3c6003ae79a673b6a2bb8e7e3e614f98ef2c2b0cd93e26b9c3540d92a0",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-04-09T04:29:12Z",
    "title_canon_sha256": "51772fc865362b3b663e1fd26e2c95cd7dcb1f66b4e41cd5f8c264e0bcd78562"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.04183",
    "kind": "arxiv",
    "version": 2
  }
}