Pith Number

pith:C2CLKUQE

pith:2013:C2CLKUQESDQNRUPNNZSOCDWB2M

not attested not anchored not stored refs pending

Managing Knowledge to Enhance Learning

Philippe A. Martin

arxiv:1306.1490 v1 · 2013-05-30 · 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{C2CLKUQESDQNRUPNNZSOCDWB2M}

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	2026-05-18T03:21:34.053395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1684b5520490e0d8d1ed6e64e10ec1d3147d4d67c96446168f7316ebd466ef06

Aliases

arxiv: 1306.1490 · arxiv_version: 1306.1490v1 · doi: 10.48550/arxiv.1306.1490 · pith_short_12: C2CLKUQESDQN · pith_short_16: C2CLKUQESDQNRUPN · pith_short_8: C2CLKUQE

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/C2CLKUQESDQNRUPNNZSOCDWB2M \
  | 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: 1684b5520490e0d8d1ed6e64e10ec1d3147d4d67c96446168f7316ebd466ef06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "170f6df691c5c7d408a8a67c3725f62ed89f31d00863f08cdd6472d2cf29579f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2013-05-30T18:21:33Z",
    "title_canon_sha256": "a41c0e9e742b4b5c76aba9a0024ade321922bac2f003cf9700a9ceb6c11286bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.1490",
    "kind": "arxiv",
    "version": 1
  }
}