Pith Number

pith:CQ6NN3FR

pith:2010:CQ6NN3FRSKKL7RRS3ZKS6Q5ZZM

not attested not anchored not stored refs pending

Gamed-based iSTART Practice: From MiBoard to Self-Explanation Showdown

Chutima Boonthum, Danielle S. McNamara, G. Tanner Jackson, Irwin B. Levinstein, Justin F. Brunelle, Kyle Dempsey

arxiv:1009.2208 v1 · 2010-09-12 · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQ6NN3FRSKKL7RRS3ZKS6Q5ZZM}

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	2026-05-18T04:41:04.593531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

143cd6ecb19294bfc632de552f43b9cb2816f413a5aba51def1dcaf5f9b5ab48

Aliases

arxiv: 1009.2208 · arxiv_version: 1009.2208v1 · doi: 10.48550/arxiv.1009.2208 · pith_short_12: CQ6NN3FRSKKL · pith_short_16: CQ6NN3FRSKKL7RRS · pith_short_8: CQ6NN3FR

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/CQ6NN3FRSKKL7RRS3ZKS6Q5ZZM \
  | 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: 143cd6ecb19294bfc632de552f43b9cb2816f413a5aba51def1dcaf5f9b5ab48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4d050dfb3b7abec7b2ecc8c2c0a9c5730661cb715ffda214045c6b7aa5b082c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GT",
    "submitted_at": "2010-09-12T00:37:34Z",
    "title_canon_sha256": "c8cfb0d5e1dd06c532a797f90d79b0167037017208bb1e160c63c66d19e4d7df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2208",
    "kind": "arxiv",
    "version": 1
  }
}