Pith Number

pith:2RKP33X7

pith:2025:2RKP33X72G22SUG4QMBA3AM25Q

not attested not anchored not stored refs pending

$\tt GrayHawk$: A public code for calculating the Gray Body Factors of massless fields around spherically symmetric Black Holes

Marco Calz\'a

arxiv:2502.04041 v2 · 2025-02-06 · gr-qc · astro-ph.CO · astro-ph.IM · 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{2RKP33X72G22SUG4QMBA3AM25Q}

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.

Cited by

2 papers in Pith

$\tt BlackHawk$ $\tt v3.0$: Hawking Radiation from Regular Black Holes

Correspondence between quasinormal modes and grey-body factors of Schwarzschild--Tangherlini black holes

Receipt and verification

First computed	2026-07-05T10:46:40.924756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d454fdeeffd1b5a950dc83020d819aec01b44d3b7ec7ffc6107a57fe81b97e6c

Aliases

arxiv: 2502.04041 · arxiv_version: 2502.04041v2 · doi: 10.48550/arxiv.2502.04041 · pith_short_12: 2RKP33X72G22 · pith_short_16: 2RKP33X72G22SUG4 · pith_short_8: 2RKP33X7

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/2RKP33X72G22SUG4QMBA3AM25Q \
  | 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: d454fdeeffd1b5a950dc83020d819aec01b44d3b7ec7ffc6107a57fe81b97e6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ada2de86f0305163d47af7fc3b6f2c8af5319b7849b5b5acd31a4add58b04cd3",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.IM",
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-02-06T13:02:33Z",
    "title_canon_sha256": "579df7b1ac0ae1c89c0761eac3a6bb30293fe1c7405aa0354421c0aef01867aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.04041",
    "kind": "arxiv",
    "version": 2
  }
}