Pith Number

pith:X7LEX6FY

pith:2005:X7LEX6FYBPKQREDPHVCKOWVFYA

not attested not anchored not stored refs pending

Acoustic horizons for axially and spherically symmetric fluid flow

M. Cadoni, P. Pani

arxiv:physics/0510164 v1 · 2005-10-18 · physics.flu-dyn · gr-qc · physics.class-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X7LEX6FYBPKQREDPHVCKOWVFYA}

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	2026-05-18T01:38:07.437219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfd64bf8b80bd508906f3d44a75aa5c005c9090d55074b192912ca4c0ab3a660

Aliases

arxiv: physics/0510164 · arxiv_version: physics/0510164v1 · doi: 10.48550/arxiv.physics/0510164 · pith_short_12: X7LEX6FYBPKQ · pith_short_16: X7LEX6FYBPKQREDP · pith_short_8: X7LEX6FY

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/X7LEX6FYBPKQREDPHVCKOWVFYA \
  | 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: bfd64bf8b80bd508906f3d44a75aa5c005c9090d55074b192912ca4c0ab3a660

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ec7774101044601984a03b02a90b8cf67d2b2710ca3d39c5ede0d6de63b6f8a",
    "cross_cats_sorted": [
      "gr-qc",
      "physics.class-ph"
    ],
    "license": "",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2005-10-18T10:45:16Z",
    "title_canon_sha256": "880aac7e4d4693f24d820a1b04dfed771dcbc6db8f72a85500e6b2c87c94dacb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0510164",
    "kind": "arxiv",
    "version": 1
  }
}