Pith Number

pith:J22ZMGXX

pith:2014:J22ZMGXXGWFJ377IWNG2N4HBDR

not attested not anchored not stored refs pending

Validation of a Conceptual Assessment Tool in E&M II

Cecilia Astolfi, Charles Baily, Qing X. Ryan, Steven J. Pollock

arxiv:1408.1936 v1 · 2014-08-08 · 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{J22ZMGXXGWFJ377IWNG2N4HBDR}

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	2026-05-18T02:45:38.833301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4eb5961af7358a9dffe8b34da6f0e11c7822af4f5bcc7587dfb9199a01066f54

Aliases

arxiv: 1408.1936 · arxiv_version: 1408.1936v1 · doi: 10.48550/arxiv.1408.1936 · pith_short_12: J22ZMGXXGWFJ · pith_short_16: J22ZMGXXGWFJ377I · pith_short_8: J22ZMGXX

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/J22ZMGXXGWFJ377IWNG2N4HBDR \
  | 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: 4eb5961af7358a9dffe8b34da6f0e11c7822af4f5bcc7587dfb9199a01066f54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20fff8d0b197ae83a8d0791a0e247a396a375bd9369a84bc70e68877e0e78a73",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2014-08-08T18:49:53Z",
    "title_canon_sha256": "cb7b6ccfd7588a3699575b06f532dd0036abb6a7cc012a255d846a9a92b3cfcf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1936",
    "kind": "arxiv",
    "version": 1
  }
}