Pith Number

pith:KEB7A3VZ

pith:2015:KEB7A3VZHVQDBBPN6472I2ZGGC

not attested not anchored not stored refs pending

Slow Sound in a duct, effective transonic flows and analogue black holes

Florent Michel, Pierre Fromholz, Renaud Parentani, Vincent Pagneux, Yves Aur\'egan

arxiv:1503.02634 v2 · 2015-03-09 · gr-qc · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KEB7A3VZHVQDBBPN6472I2ZGGC}

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	2026-05-18T01:24:03.896698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5103f06eb93d603085edf73fa46b2630a52ba90e7f65afdfc7d0a60680fd5cbf

Aliases

arxiv: 1503.02634 · arxiv_version: 1503.02634v2 · doi: 10.48550/arxiv.1503.02634 · pith_short_12: KEB7A3VZHVQD · pith_short_16: KEB7A3VZHVQDBBPN · pith_short_8: KEB7A3VZ

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/KEB7A3VZHVQDBBPN6472I2ZGGC \
  | 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: 5103f06eb93d603085edf73fa46b2630a52ba90e7f65afdfc7d0a60680fd5cbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7e82e2a496b03a320a0ac3a9f6d49ad1c3ebc8afd19525739173ea69d315cca",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-03-09T19:32:46Z",
    "title_canon_sha256": "8c19c4b192456733763e54396b6fee654b7192025d507fb6ae379c2ab39c1e74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02634",
    "kind": "arxiv",
    "version": 2
  }
}