Pith Number

pith:2BTBV7YT

pith:2015:2BTBV7YTGDPIAK4NZ7ZCCB5N3U

not attested not anchored not stored refs pending

Teachers are from Heaven, Students are from Hell - True or False?

Luiz Fernando Capretz

arxiv:1507.07883 v1 · 2015-07-24 · 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{2BTBV7YTGDPIAK4NZ7ZCCB5N3U}

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	2026-05-18T01:36:11.675369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0661aff1330de802b8dcff22107addd30d0147a2b491e96a06b8dbdcb298083

Aliases

arxiv: 1507.07883 · arxiv_version: 1507.07883v1 · doi: 10.48550/arxiv.1507.07883 · pith_short_12: 2BTBV7YTGDPI · pith_short_16: 2BTBV7YTGDPIAK4N · pith_short_8: 2BTBV7YT

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/2BTBV7YTGDPIAK4NZ7ZCCB5N3U \
  | 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: d0661aff1330de802b8dcff22107addd30d0147a2b491e96a06b8dbdcb298083

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "140592a6d53352a0f11d1957033fd63105a1ab5392c4b8a80e57ca8a3070f384",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2015-07-24T18:57:14Z",
    "title_canon_sha256": "79986b2d3c933ab48d46fe0cb26899090f043e766df55c78a6e94eec0f4ac35b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07883",
    "kind": "arxiv",
    "version": 1
  }
}