Pith Number

pith:BRNOSH4K

pith:2023:BRNOSH4KUTWTPUMWLBTEFMLVSK

not attested not anchored not stored refs pending

Knowns and Unknowns: An Experience Report on Discovering Tacit Knowledge of Maritime Surveyors

Anastasiia Tkalich, Klaas-Jan Stol, Morten Hatling, Tor Sporsem

arxiv:2301.10211 v2 · 2023-01-24 · 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{BRNOSH4KUTWTPUMWLBTEFMLVSK}

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	2026-07-05T05:42:30.290681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c5ae91f8aa4ed37d196586642b175929d83746020d7a5f080d0152bd482f960

Aliases

arxiv: 2301.10211 · arxiv_version: 2301.10211v2 · doi: 10.48550/arxiv.2301.10211 · pith_short_12: BRNOSH4KUTWT · pith_short_16: BRNOSH4KUTWTPUMW · pith_short_8: BRNOSH4K

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/BRNOSH4KUTWTPUMWLBTEFMLVSK \
  | 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: 0c5ae91f8aa4ed37d196586642b175929d83746020d7a5f080d0152bd482f960

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30c98c34b3d1a02e1407236ac81059c0e03a6f4c6c47f6b99b2ddbbc4021fec8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2023-01-24T18:39:29Z",
    "title_canon_sha256": "99c0f0c81026bf1c7b3ffc4fcbc3b30987ed90889d13df8c62b3dac551ab6cce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.10211",
    "kind": "arxiv",
    "version": 2
  }
}