Pith Number

pith:53TKLZ6N

pith:2018:53TKLZ6NR7QJ5N76YSV5BT433Y

not attested not anchored not stored refs pending

Response Collector: A Video Learning System for Flipped Classrooms

Hayato Okumoto, Kyoji Umemura, Mitsuo Yoshida, Yuko Ichikawa

arxiv:1808.07227 v1 · 2018-08-22 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{53TKLZ6NR7QJ5N76YSV5BT433Y}

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	2026-05-17T23:58:38.045572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eee6a5e7cd8fe09eb7fec4abd0cf9bde2120318440fd3c6fa9ca65aba8c4d43a

Aliases

arxiv: 1808.07227 · arxiv_version: 1808.07227v1 · doi: 10.48550/arxiv.1808.07227 · pith_short_12: 53TKLZ6NR7QJ · pith_short_16: 53TKLZ6NR7QJ5N76 · pith_short_8: 53TKLZ6N

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/53TKLZ6NR7QJ5N76YSV5BT433Y \
  | 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: eee6a5e7cd8fe09eb7fec4abd0cf9bde2120318440fd3c6fa9ca65aba8c4d43a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "565dc88e8d0fd176eb13b30bfa43c579f075a8d8c908f36b7eb1de5b4beba8d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2018-08-22T05:53:03Z",
    "title_canon_sha256": "3ed86f3bd35f98e345ac09c82945315877e5c31adda0ba27ba8d88df983e663e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07227",
    "kind": "arxiv",
    "version": 1
  }
}