Pith Number

pith:6RWCM427

pith:2016:6RWCM427BG5KFJ344TCUOHVBUR

not attested not anchored not stored refs pending

The entropy of an acoustic black hole in neo-Newtonian theory

E. Passos, F. A. Brito, I. G. Salako, M. A. Anacleto

arxiv:1603.07311 v2 · 2016-03-23 · hep-th · 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{6RWCM427BG5KFJ344TCUOHVBUR}

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	2026-05-18T00:02:28.449420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f46c26735f09baa2a77ce4c5471ea1a46608da5f3c5e25584762b2372a32821e

Aliases

arxiv: 1603.07311 · arxiv_version: 1603.07311v2 · doi: 10.48550/arxiv.1603.07311 · pith_short_12: 6RWCM427BG5K · pith_short_16: 6RWCM427BG5KFJ34 · pith_short_8: 6RWCM427

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/6RWCM427BG5KFJ344TCUOHVBUR \
  | 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: f46c26735f09baa2a77ce4c5471ea1a46608da5f3c5e25584762b2372a32821e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b368e2af89b655fcdb5fae6c92c8e7bf3b7690b45a935da32c9cd46a820d3b9",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2016-03-23T19:17:44Z",
    "title_canon_sha256": "871ef50a289b28e8ed6e2cf337de6762660cf550a3fdef1d0108ca8608bf4109"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07311",
    "kind": "arxiv",
    "version": 2
  }
}