Pith Number

pith:5VLM26V4

pith:2014:5VLM26V46IZXRJWAOOL73CJHDW

not attested not anchored not stored refs pending

Designing for the Don't Cares: A story about a sociotechnical system

Ian Sommerville

arxiv:1411.3948 v1 · 2014-11-14 · 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{5VLM26V46IZXRJWAOOL73CJHDW}

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	2026-05-18T02:37:37.309394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed56cd7abcf23378a6c07397fd89271dab0cceba3f251584d656d44ec0af5db4

Aliases

arxiv: 1411.3948 · arxiv_version: 1411.3948v1 · doi: 10.48550/arxiv.1411.3948 · pith_short_12: 5VLM26V46IZX · pith_short_16: 5VLM26V46IZXRJWA · pith_short_8: 5VLM26V4

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/5VLM26V46IZXRJWAOOL73CJHDW \
  | 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: ed56cd7abcf23378a6c07397fd89271dab0cceba3f251584d656d44ec0af5db4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ea09da61cdd0c2d7653a8ee1436c8741da69d4685e6def07d7e185dc2b07387",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2014-11-14T16:01:52Z",
    "title_canon_sha256": "769826af17a3aa7ad42ed8c5cfc9821a879e3ffddbe1407e781edf9cfce6717f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.3948",
    "kind": "arxiv",
    "version": 1
  }
}