Pith Number

pith:FD4PWEKU

pith:2019:FD4PWEKU562FRPUTKSBBUZ5TKX

not attested not anchored not stored refs pending

Digitally Capturing Physical Prototypes During Early-Stage Engineering Design Projects for Initial Analysis of Project Output and Progression

Heikki Sj\"oman, Jorgen F. Erichsen, Martin Steinert, Torgeir Welo

arxiv:1905.01950 v2 · 2019-04-26 · cs.HC · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FD4PWEKU562FRPUTKSBBUZ5TKX}

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	2026-07-05T00:49:07.559298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28f8fb1154efb458be9354821a67b355cd32e33575d0ebd666fd983b5f817dd0

Aliases

arxiv: 1905.01950 · arxiv_version: 1905.01950v2 · doi: 10.48550/arxiv.1905.01950 · pith_short_12: FD4PWEKU562F · pith_short_16: FD4PWEKU562FRPUT · pith_short_8: FD4PWEKU

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/FD4PWEKU562FRPUTKSBBUZ5TKX \
  | 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: 28f8fb1154efb458be9354821a67b355cd32e33575d0ebd666fd983b5f817dd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db1aaf85ab36e37151fa00365542d6de4e3a33dfe1bba7d09660f314000af663",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2019-04-26T09:04:37Z",
    "title_canon_sha256": "141754822182de5b6a6ef88cf8115e34bc1a2278e47ca4170e39e1690ca4133e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.01950",
    "kind": "arxiv",
    "version": 2
  }
}