Pith Number

pith:PHMW3YSV

pith:2025:PHMW3YSVH5ZKENU7QXM5V5L6BN

not attested not anchored not stored refs pending

Deriving the paradox: original derivation of Hawking radiation

Andrea Pierfrancesco Sanna, Mariano Cadoni, Mirko Pitzalis, Salvatore Mignemi

arxiv:2502.13026 v1 · 2025-02-18 · 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{PHMW3YSVH5ZKENU7QXM5V5L6BN}

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	2026-07-05T10:16:28.183489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79d96de2553f72a2369f85d9daf57e0b5d80ee08eb5aaa3ddb529e41b3952c94

Aliases

arxiv: 2502.13026 · arxiv_version: 2502.13026v1 · doi: 10.48550/arxiv.2502.13026 · pith_short_12: PHMW3YSVH5ZK · pith_short_16: PHMW3YSVH5ZKENU7 · pith_short_8: PHMW3YSV

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/PHMW3YSVH5ZKENU7QXM5V5L6BN \
  | 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: 79d96de2553f72a2369f85d9daf57e0b5d80ee08eb5aaa3ddb529e41b3952c94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0aefb057417c536b293d2b1931ae0162801c5c94692c0f86aae544feceed7d1f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-02-18T16:44:54Z",
    "title_canon_sha256": "7f4c98ff0e64a584ea126fe2e9c5ffa662bc764934340c4f9462cce5e643d49e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.13026",
    "kind": "arxiv",
    "version": 1
  }
}