Pith Number

pith:MDQBSPU4

pith:2018:MDQBSPU4DHDOYEPXDUCGMC2OP7

not attested not anchored not stored refs pending

State of the Practice for GIS Software

Adam Lazzarato, Jacques Carette, W. Spencer Smith

arxiv:1802.03422 v1 · 2018-02-09 · 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{MDQBSPU4DHDOYEPXDUCGMC2OP7}

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	2026-05-18T00:23:51.721848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60e0193e9c19c6ec11f71d04660b4e7fe581da0fe7221df00483d844dd4b3b86

Aliases

arxiv: 1802.03422 · arxiv_version: 1802.03422v1 · doi: 10.48550/arxiv.1802.03422 · pith_short_12: MDQBSPU4DHDO · pith_short_16: MDQBSPU4DHDOYEPX · pith_short_8: MDQBSPU4

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/MDQBSPU4DHDOYEPXDUCGMC2OP7 \
  | 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: 60e0193e9c19c6ec11f71d04660b4e7fe581da0fe7221df00483d844dd4b3b86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73c3f9fe771b661f73d81d406791689719d58960668aa69a14652ba6ec81932e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2018-02-09T19:36:19Z",
    "title_canon_sha256": "ddddf6a4bd003c93cae29fb53118fe55dc1edbc2af1cc1ab583d1d5646b20a5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03422",
    "kind": "arxiv",
    "version": 1
  }
}