Pith Number

pith:N7KUEPDV

pith:2012:N7KUEPDVP4M4ZZVN3TBPFKI5OJ

not attested not anchored not stored refs pending

Teaching cloud computing: a software engineering perspective

Ian Sommerville

arxiv:1209.0948 v1 · 2012-09-05 · cs.DC · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N7KUEPDVP4M4ZZVN3TBPFKI5OJ}

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	2026-05-18T03:46:15.842449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fd5423c757f19cce6addcc2f2a91d7256731e88e6068859bdbc14b976a36273

Aliases

arxiv: 1209.0948 · arxiv_version: 1209.0948v1 · doi: 10.48550/arxiv.1209.0948 · pith_short_12: N7KUEPDVP4M4 · pith_short_16: N7KUEPDVP4M4ZZVN · pith_short_8: N7KUEPDV

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/N7KUEPDVP4M4ZZVN3TBPFKI5OJ \
  | 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: 6fd5423c757f19cce6addcc2f2a91d7256731e88e6068859bdbc14b976a36273

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fdab3b5d3d2141dc6a9a6765ff2fe4c78022829ffe87ca76eedb8a3b1e5b5c0",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2012-09-05T12:31:34Z",
    "title_canon_sha256": "10a51da175d2919d30351ec3493b81c4814d311dd185e8afb81b6d6f10f32db6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0948",
    "kind": "arxiv",
    "version": 1
  }
}