Pith Number

pith:BQC4LHTW

pith:2025:BQC4LHTW6QRG7WYZAWFCTTPH2T

not attested not anchored not stored refs pending

Impacts of Perfect Fluid Dark Matter on Spacetime Geometry -- the Exponential Metric

Jan Kuncewicz

arxiv:2506.04304 v1 · 2025-06-04 · gr-qc · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BQC4LHTW6QRG7WYZAWFCTTPH2T}

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	2026-07-05T11:16:12.164667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c05c59e76f4226fdb19058a29cde7d4e2cbc7e45c803a5931a6a3af82c24962

Aliases

arxiv: 2506.04304 · arxiv_version: 2506.04304v1 · doi: 10.48550/arxiv.2506.04304 · pith_short_12: BQC4LHTW6QRG · pith_short_16: BQC4LHTW6QRG7WYZ · pith_short_8: BQC4LHTW

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/BQC4LHTW6QRG7WYZAWFCTTPH2T \
  | 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: 0c05c59e76f4226fdb19058a29cde7d4e2cbc7e45c803a5931a6a3af82c24962

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d623d147de418cd132787ab0d0c5e9c463ce4a73772157e51c43ce75ce5e2df",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-06-04T16:42:55Z",
    "title_canon_sha256": "3d3dcd057f1472c7de44d3a8652c3df590e02a4f31a6c9bf0e5ade3dc36a8801"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.04304",
    "kind": "arxiv",
    "version": 1
  }
}