Pith Number

pith:OIQOWPOJ

pith:2016:OIQOWPOJFHQXTYRY7BUSQZYU3G

not attested not anchored not stored refs pending

On Implementing Real-time Specification Patterns Using Observers

Andrew Gacek, John D. Backes, John Komp, Michael W. Whalen

arxiv:1604.08155 v1 · 2016-04-27 · cs.SE · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OIQOWPOJFHQXTYRY7BUSQZYU3G}

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	2026-05-18T01:16:07.944348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7220eb3dc929e179e238f869286714d990d1bbe817d15074cf7aa89bd01d0c32

Aliases

arxiv: 1604.08155 · arxiv_version: 1604.08155v1 · doi: 10.48550/arxiv.1604.08155 · pith_short_12: OIQOWPOJFHQX · pith_short_16: OIQOWPOJFHQXTYRY · pith_short_8: OIQOWPOJ

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/OIQOWPOJFHQXTYRY7BUSQZYU3G \
  | 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: 7220eb3dc929e179e238f869286714d990d1bbe817d15074cf7aa89bd01d0c32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5342da0c08ba0fb39e77674823b0b1eb1f229cfac2bb3f49f934631cc81d43c",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2016-04-27T18:01:36Z",
    "title_canon_sha256": "f1736503507561ecea2c504642181864d77d9a8a19b94fe07afa82e5b6628123"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08155",
    "kind": "arxiv",
    "version": 1
  }
}