Pith Number

pith:6OZY7P5B

pith:2019:6OZY7P5BLGUR2LGRAKP6QZDTJD

not attested not anchored not stored refs pending

Modelling End-of-Session Actions in Educational Systems

Casper Hansen, Christian Hansen, Christina Lioma, Stephen Alstrup

arxiv:1909.06856 v1 · 2019-09-15 · 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{6OZY7P5BLGUR2LGRAKP6QZDTJD}

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	2026-07-05T00:04:50.784715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3b38fbfa159a91d2cd1029fe8647348eb91139a17c08d06aff40043703914f5

Aliases

arxiv: 1909.06856 · arxiv_version: 1909.06856v1 · doi: 10.48550/arxiv.1909.06856 · pith_short_12: 6OZY7P5BLGUR · pith_short_16: 6OZY7P5BLGUR2LGR · pith_short_8: 6OZY7P5B

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/6OZY7P5BLGUR2LGRAKP6QZDTJD \
  | 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: f3b38fbfa159a91d2cd1029fe8647348eb91139a17c08d06aff40043703914f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b03ea8485da31f3b43340a7d8061b2cef90c394c4207c3120386bb8d57de13ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2019-09-15T18:39:58Z",
    "title_canon_sha256": "f5a5a4dc671ae8ff991e26451d5ee0c2c2920466304698c7107b7540b4410b2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.06856",
    "kind": "arxiv",
    "version": 1
  }
}