Pith Number

pith:BKZFMFT4

pith:2012:BKZFMFT445WGF7DGWC5E6KRKDD

not attested not anchored not stored refs pending

Information requirements for enterprise systems

Ian Sommerville, Russell Lock, Tim Storer

arxiv:1209.5246 v1 · 2012-09-24 · cs.SE · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BKZFMFT445WGF7DGWC5E6KRKDD}

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	2026-05-18T03:44:58.736767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ab256167ce76c62fc66b0ba4f2a2a18cec45160338e6d47589f2cf12ca1ba59

Aliases

arxiv: 1209.5246 · arxiv_version: 1209.5246v1 · doi: 10.48550/arxiv.1209.5246 · pith_short_12: BKZFMFT445WG · pith_short_16: BKZFMFT445WGF7DG · pith_short_8: BKZFMFT4

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/BKZFMFT445WGF7DGWC5E6KRKDD \
  | 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: 0ab256167ce76c62fc66b0ba4f2a2a18cec45160338e6d47589f2cf12ca1ba59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59140c18618db6afdd65a32c0d3b93b10e72b95a2ae5eafe7b1edfedb0cb01e4",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2012-09-24T12:36:32Z",
    "title_canon_sha256": "142775444e9b0e0e4bd93e78e63e8ce82191499c250f433818e2819330ac84db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5246",
    "kind": "arxiv",
    "version": 1
  }
}