Pith Number

pith:TON2ZGNI

pith:2018:TON2ZGNI6PW4VXIUFHNQFAUP4G

not attested not anchored not stored refs pending

Deep Room Recognition Using Inaudible Echos

Chaojie Gu, Qun Song, Rui Tan

arxiv:1809.00531 v2 · 2018-09-03 · cs.SD · eess.AS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TON2ZGNI6PW4VXIUFHNQFAUP4G}

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	2026-05-18T00:06:18.012063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b9bac99a8f3edcadd1429db02828fe1a51fb0c44e3db4da727793de6b3b2794

Aliases

arxiv: 1809.00531 · arxiv_version: 1809.00531v2 · doi: 10.48550/arxiv.1809.00531 · pith_short_12: TON2ZGNI6PW4 · pith_short_16: TON2ZGNI6PW4VXIU · pith_short_8: TON2ZGNI

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/TON2ZGNI6PW4VXIUFHNQFAUP4G \
  | 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: 9b9bac99a8f3edcadd1429db02828fe1a51fb0c44e3db4da727793de6b3b2794

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38657fd16cb8332cbab92b5c712cbe5ad8f41d930d017aae0549bdd57588599a",
    "cross_cats_sorted": [
      "eess.AS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2018-09-03T10:17:14Z",
    "title_canon_sha256": "a6896681bee54659e5e325dfaedd7f5295a6b364b1659ff6f1633e500fabd7c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.00531",
    "kind": "arxiv",
    "version": 2
  }
}