Pith Number

pith:3R7CP725

pith:2018:3R7CP725OJOEEO6FVBKAFHB5HV

not attested not anchored not stored refs pending

Case Study: Coordinating Among Multiple Semiotic Resources to Solve Complex Physics Problems

Dean A Zollman, Eleanor C Sayre, Nandana Weliweriya

arxiv:1808.02866 v2 · 2018-08-08 · 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{3R7CP725OJOEEO6FVBKAFHB5HV}

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	2026-05-17T23:55:12.162877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc7e27ff5d725c423bc5a854029c3d3d6e6c8bde1247df25535d222d92817e6b

Aliases

arxiv: 1808.02866 · arxiv_version: 1808.02866v2 · doi: 10.48550/arxiv.1808.02866 · pith_short_12: 3R7CP725OJOE · pith_short_16: 3R7CP725OJOEEO6F · pith_short_8: 3R7CP725

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/3R7CP725OJOEEO6FVBKAFHB5HV \
  | 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: dc7e27ff5d725c423bc5a854029c3d3d6e6c8bde1247df25535d222d92817e6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d37bd6219797654bf7f930fbaf24d275fcadbb188fe9b98af71633699a48c29b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-08-08T17:13:42Z",
    "title_canon_sha256": "e39434609a72c17ef7589fc98578d4718f33a0fcd4beed8484c6da2984996380"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02866",
    "kind": "arxiv",
    "version": 2
  }
}