Pith Number

pith:IHXHULVV

pith:2019:IHXHULVVUGZTZAVTW4C7F7DH64

not attested not anchored not stored refs pending

Acoustic black holes in curved spacetime and emergence of analogue Minkowski metric

Mikio Nakahara, Sang-Jin Sin, Shao-Feng Wu, Xian-Hui Ge, Yu Tian

arxiv:1902.11126 v2 · 2019-02-28 · 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{IHXHULVVUGZTZAVTW4C7F7DH64}

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	2026-05-17T23:44:55.131244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41ee7a2eb5a1b33c82b3b705f2fc67f7198a6b1b9d080e0d951eb853adf39ac5

Aliases

arxiv: 1902.11126 · arxiv_version: 1902.11126v2 · doi: 10.48550/arxiv.1902.11126 · pith_short_12: IHXHULVVUGZT · pith_short_16: IHXHULVVUGZTZAVT · pith_short_8: IHXHULVV

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/IHXHULVVUGZTZAVTW4C7F7DH64 \
  | 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: 41ee7a2eb5a1b33c82b3b705f2fc67f7198a6b1b9d080e0d951eb853adf39ac5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b78442d2d6409f0489dda1600825d9c44cf0ec3e0acf19581a1e2cfa5159fa4f",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2019-02-28T15:02:00Z",
    "title_canon_sha256": "a0c49e8d1070efd2fe248f59b6a3fc6c2d9e7c9372d313a3197a680fc314f218"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.11126",
    "kind": "arxiv",
    "version": 2
  }
}