Pith Number

pith:NTBD3BLW

pith:2022:NTBD3BLWIIER4UJBLUZCQVXUD5

not attested not anchored not stored refs pending

Development and validation of an astronomy self-efficacy instrument for understanding and doing

Christina M. Norris, David McKinnon, Michael Fitzgerald, Rachel Freed

arxiv:2204.13803 v1 · 2022-04-28 · physics.ed-ph · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTBD3BLWIIER4UJBLUZCQVXUD5}

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	2026-07-05T04:18:53.692386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc23d857642091e51215d322856f41f49183ee89ea94f8a451122b0cb20844f

Aliases

arxiv: 2204.13803 · arxiv_version: 2204.13803v1 · doi: 10.48550/arxiv.2204.13803 · pith_short_12: NTBD3BLWIIER · pith_short_16: NTBD3BLWIIER4UJB · pith_short_8: NTBD3BLW

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/NTBD3BLWIIER4UJBLUZCQVXUD5 \
  | 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: 6cc23d857642091e51215d322856f41f49183ee89ea94f8a451122b0cb20844f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "666b296e17c19a8e43a55c1ad0054ccfdf9b66f212c3e65fa1595952db60d719",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2022-04-28T22:31:43Z",
    "title_canon_sha256": "850d2e58b51c77c882c049c601dc9160ac9b84a731e8db81eecd75e1d4c01c62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.13803",
    "kind": "arxiv",
    "version": 1
  }
}