Pith Number

pith:OT7QIMEY

pith:2019:OT7QIMEYII7UQIUH4IY5CGOZOP

not attested not anchored not stored refs pending

From Helmut J\"urgensen's Former Students: The Game of Informatics Research

Christopher Power, Ian McQuillan, Mark Daley, Mark Eramian

arxiv:1903.03405 v1 · 2019-03-07 · cs.GL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OT7QIMEYII7UQIUH4IY5CGOZOP}

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	2026-05-17T23:51:45.586550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74ff043098423f482287e231d119d973de9125f9db3dfff2980a21815bbd9a4a

Aliases

arxiv: 1903.03405 · arxiv_version: 1903.03405v1 · doi: 10.48550/arxiv.1903.03405 · pith_short_12: OT7QIMEYII7U · pith_short_16: OT7QIMEYII7UQIUH · pith_short_8: OT7QIMEY

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/OT7QIMEYII7UQIUH4IY5CGOZOP \
  | 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: 74ff043098423f482287e231d119d973de9125f9db3dfff2980a21815bbd9a4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ebdcad9dbca46e1ea449d7aa465c68ef4af0fad59f1508cd42ed9720300657b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GL",
    "submitted_at": "2019-03-07T18:53:52Z",
    "title_canon_sha256": "81c6b6f3f821ee86b140b21e691d1b5c3a61800279b2d1676b612e696423d80b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03405",
    "kind": "arxiv",
    "version": 1
  }
}