Pith Number

pith:ET4GQVOE

pith:2022:ET4GQVOE5RKACW7OFNUOEPVVBO

not attested not anchored not stored refs pending

FaceOri: Tracking Head Position and Orientation Using Ultrasonic Ranging on Earphones

Farshid Salemi Parizi, Ishan Chatterjee, Jiexin Ding, Shwetak Patel, Yuanchun Shi, Yukang Yan, Yuntao Wang, Yuzhou Zhuang

arxiv:2203.10553 v1 · 2022-03-20 · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ET4GQVOE5RKACW7OFNUOEPVVBO}

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	2026-07-05T04:06:54.319907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24f86855c4ec54015bee2b68e23eb50b85c348d88f4df6271cfbf4c80f3d27db

Aliases

arxiv: 2203.10553 · arxiv_version: 2203.10553v1 · doi: 10.48550/arxiv.2203.10553 · pith_short_12: ET4GQVOE5RKA · pith_short_16: ET4GQVOE5RKACW7O · pith_short_8: ET4GQVOE

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/ET4GQVOE5RKACW7OFNUOEPVVBO \
  | 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: 24f86855c4ec54015bee2b68e23eb50b85c348d88f4df6271cfbf4c80f3d27db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8778199fc1a53d86ef9efc51a4b84cd31aafc2df2352cb999d3362a6df0989fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2022-03-20T13:46:26Z",
    "title_canon_sha256": "e7517d1431a5d700a9b8e0b23a22ae8231406843ecf1c471b0ab0147fa686f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.10553",
    "kind": "arxiv",
    "version": 1
  }
}