Pith Number

pith:6HJ2BYML

pith:2018:6HJ2BYMLI3URBCT2GEZVYQQK44

not attested not anchored not stored refs pending

Superradiance Effect of a Black Hole Immersed in an Expanding Universe

Eleftherios Papantonopoulos, Konstantinos Ntrekis, Stella Kiorpelidi

arxiv:1803.01817 v1 · 2018-03-05 · gr-qc · 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{6HJ2BYMLI3URBCT2GEZVYQQK44}

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	2026-05-18T00:21:59.537478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1d3a0e18b46e9108a7a31335c420ae7259b847d6d7cba8a4a3653a44ed0d0a4

Aliases

arxiv: 1803.01817 · arxiv_version: 1803.01817v1 · doi: 10.48550/arxiv.1803.01817 · pith_short_12: 6HJ2BYMLI3UR · pith_short_16: 6HJ2BYMLI3URBCT2 · pith_short_8: 6HJ2BYML

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/6HJ2BYMLI3URBCT2GEZVYQQK44 \
  | 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: f1d3a0e18b46e9108a7a31335c420ae7259b847d6d7cba8a4a3653a44ed0d0a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef250e683dee676bb7272f8ad5a32d470b46d91cbe38c7e50cd8c1f4e879a903",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-03-05T18:24:28Z",
    "title_canon_sha256": "f3c816f253702cc0f07903bac72833c1c4fd1225fb80e28c7b88843a0cfd6f10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01817",
    "kind": "arxiv",
    "version": 1
  }
}