Pith Number

pith:KGHNF5O7

pith:2025:KGHNF5O7WDKXKHXIJ5QKKDLIBK

not attested not anchored not stored refs pending

On the nature of the black hole information problem

Thiago T. Bergamaschi

arxiv:2505.17220 v1 · 2025-05-22 · gr-qc · hep-th · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KGHNF5O7WDKXKHXIJ5QKKDLIBK}

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	2026-07-05T11:07:49.099436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

518ed2f5dfb0d5751ee84f60a50d680ab8c5cab6bd90742278e89019d896f308

Aliases

arxiv: 2505.17220 · arxiv_version: 2505.17220v1 · doi: 10.48550/arxiv.2505.17220 · pith_short_12: KGHNF5O7WDKX · pith_short_16: KGHNF5O7WDKXKHXI · pith_short_8: KGHNF5O7

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/KGHNF5O7WDKXKHXIJ5QKKDLIBK \
  | 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: 518ed2f5dfb0d5751ee84f60a50d680ab8c5cab6bd90742278e89019d896f308

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92faef4ebe7c9aa3d8a101f44ffcf423a0a9ff257c99b1e5e7f5eb52b933639c",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-05-22T18:52:50Z",
    "title_canon_sha256": "4bf3e0b2bc9cd3c9d2dffa8b238c2a5b85bd466568fb6ac346fdba3147f1f8a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.17220",
    "kind": "arxiv",
    "version": 1
  }
}