Pith Number

pith:4SCZWTSR

pith:2015:4SCZWTSRY4OAI3GTNHFJDQPLED

not attested not anchored not stored refs pending

A Framework for Teaching the Fundamentals of Additive Manufacturing and Enabling Rapid Innovation

A. John Hart, Jamison Go

arxiv:1510.09070 v1 · 2015-10-30 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SCZWTSRY4OAI3GTNHFJDQPLED}

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	2026-05-18T01:18:14.171958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4859b4e51c71c046cd369ca91c1eb20cc6c40518f0ee239319393af38571e52

Aliases

arxiv: 1510.09070 · arxiv_version: 1510.09070v1 · doi: 10.48550/arxiv.1510.09070 · pith_short_12: 4SCZWTSRY4OA · pith_short_16: 4SCZWTSRY4OAI3GT · pith_short_8: 4SCZWTSR

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/4SCZWTSRY4OAI3GTNHFJDQPLED \
  | 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: e4859b4e51c71c046cd369ca91c1eb20cc6c40518f0ee239319393af38571e52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4c0d596ef8423fe8b12581be964685946292b63bc16697c6f1216163c65c64a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-10-30T12:59:24Z",
    "title_canon_sha256": "b9e00573e019666508daf56b8ff7b4ee05f9c8feea30ace0df0ed704f7bde913"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.09070",
    "kind": "arxiv",
    "version": 1
  }
}