Pith Number

pith:SJMD4LR3

pith:2017:SJMD4LR35EQCMFYYD3POPRJHXC

not attested not anchored not stored refs pending

Reading the Sky and The Spiral of Teaching and Learning in Astronomy

Urban Eriksson

arxiv:1705.05096 v1 · 2017-05-15 · 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{SJMD4LR35EQCMFYYD3POPRJHXC}

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	2026-05-17T23:44:15.704042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92583e2e3be9202617181edee7c527b8819165ab40bc4be030121c50a8b45e78

Aliases

arxiv: 1705.05096 · arxiv_version: 1705.05096v1 · doi: 10.48550/arxiv.1705.05096 · pith_short_12: SJMD4LR35EQC · pith_short_16: SJMD4LR35EQCMFYY · pith_short_8: SJMD4LR3

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/SJMD4LR35EQCMFYYD3POPRJHXC \
  | 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: 92583e2e3be9202617181edee7c527b8819165ab40bc4be030121c50a8b45e78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8123078f1f13df5170003287e1c840c3ec1a286a7d30ca1bf432a2a522a09c64",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2017-05-15T07:32:54Z",
    "title_canon_sha256": "5e286ee3b4fd13d6644cfe6f89d9050192a372bf76aac0bdf2c9acddbe1560b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.05096",
    "kind": "arxiv",
    "version": 1
  }
}