Pith Number

pith:YX4HBI3T

pith:2018:YX4HBI3T3USDBX7LBNKNFQSIPZ

not attested not anchored not stored refs pending

Resource Letter RBAI-2: Research-based assessment instruments: Beyond physics topics

Adrian Madsen, Cassandra A Paul, Eleanor C Sayre, Sarah B. McKagan

arxiv:1811.02900 v1 · 2018-11-07 · 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{YX4HBI3T3USDBX7LBNKNFQSIPZ}

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	2026-05-17T23:45:35.389458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5f870a373dd2430dfeb0b54d2c2487e76526bdf4bb7f7ea45eb6140301d3f2e

Aliases

arxiv: 1811.02900 · arxiv_version: 1811.02900v1 · doi: 10.48550/arxiv.1811.02900 · pith_short_12: YX4HBI3T3USD · pith_short_16: YX4HBI3T3USDBX7L · pith_short_8: YX4HBI3T

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/YX4HBI3T3USDBX7LBNKNFQSIPZ \
  | 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: c5f870a373dd2430dfeb0b54d2c2487e76526bdf4bb7f7ea45eb6140301d3f2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ef5de7ef410a84a5e8575a75cf4a17cd1d5967be75b42d04749250e97ec6b9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-11-07T14:23:29Z",
    "title_canon_sha256": "71f7f0abe32f35ae97961e2e6bd93f870ee26ad15c8ebad8172a3fd07ba5b1ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.02900",
    "kind": "arxiv",
    "version": 1
  }
}