Pith Number

pith:PLK7IZYM

pith:2019:PLK7IZYM5MSYMMON4RFVYQMCL4

not attested not anchored not stored refs pending

A Multimodal Alerting System for Online Class Quality Assurance

Gale Yan Huang, Hang Li, Jiahao Chen, Wenbiao Ding, Wenxin Wang, Zitao Liu

arxiv:1909.11765 v1 · 2019-09-01 · cs.HC · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PLK7IZYM5MSYMMON4RFVYQMCL4}

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	2026-07-05T00:07:27.712031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ad5f4670ceb258631cde44b5c41825f1397353c09fd95007f11ba2165844e0f

Aliases

arxiv: 1909.11765 · arxiv_version: 1909.11765v1 · doi: 10.48550/arxiv.1909.11765 · pith_short_12: PLK7IZYM5MSY · pith_short_16: PLK7IZYM5MSYMMON · pith_short_8: PLK7IZYM

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/PLK7IZYM5MSYMMON4RFVYQMCL4 \
  | 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: 7ad5f4670ceb258631cde44b5c41825f1397353c09fd95007f11ba2165844e0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9b75ff4e22d3d6e6827c79e474020169f5c7aa69f030142b66198919218cbdf",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2019-09-01T10:23:44Z",
    "title_canon_sha256": "1a2c36cf860b049c503bc6d5cf3cb552173e66f826b8867d8ccd7433532949cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.11765",
    "kind": "arxiv",
    "version": 1
  }
}