Pith Number

pith:HZ4WRALE

pith:2021:HZ4WRALERNQDUOVXSZI5VE73O5

not attested not anchored not stored refs pending

Circadian Rhythms are Not Captured Equal: Exploring Circadian Metrics Extracted by Different Computational Methods from Smartphone Accelerometer and GPS Sensors in Daily Life Tracking

Congyu Wu, David M. Schnyer, Hagen Fritz, Megan McMahon

arxiv:2107.04135 v1 · 2021-07-08 · 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{HZ4WRALERNQDUOVXSZI5VE73O5}

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	2026-07-05T02:56:29.967990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e796881648b603a3ab79651da93fb777c8cab5f05273e615c6315e3019f1418

Aliases

arxiv: 2107.04135 · arxiv_version: 2107.04135v1 · doi: 10.48550/arxiv.2107.04135 · pith_short_12: HZ4WRALERNQD · pith_short_16: HZ4WRALERNQDUOVX · pith_short_8: HZ4WRALE

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/HZ4WRALERNQDUOVXSZI5VE73O5 \
  | 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: 3e796881648b603a3ab79651da93fb777c8cab5f05273e615c6315e3019f1418

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4dfcc846469003e698ed14beeee3b380f739c860cdb4681d7159b6701f420887",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2021-07-08T22:30:40Z",
    "title_canon_sha256": "3cc8dddf8bd63d56feb360e6035ab4fe81dc9a2e707346a33267a636192ce8f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.04135",
    "kind": "arxiv",
    "version": 1
  }
}