Pith Number

pith:L2LGVH35

pith:2017:L2LGVH35SQ3G37FB6HQUSBFZH7

not attested not anchored not stored refs pending

The Sun and its educational spectrum

Alejandro Cardenas-Avendano, Benjamin Calvo-Mozo, Freddy Moreno Cardenas, Santiago Vargas Dominguez

arxiv:1712.07987 v2 · 2017-12-21 · physics.ed-ph · physics.pop-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{L2LGVH35SQ3G37FB6HQUSBFZH7}

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	2026-05-17T23:50:42.869491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e966a9f7d94366dfca1f1e14904b93ff39ba10b259e368434a2820cf60706e0

Aliases

arxiv: 1712.07987 · arxiv_version: 1712.07987v2 · doi: 10.48550/arxiv.1712.07987 · pith_short_12: L2LGVH35SQ3G · pith_short_16: L2LGVH35SQ3G37FB · pith_short_8: L2LGVH35

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/L2LGVH35SQ3G37FB6HQUSBFZH7 \
  | 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: 5e966a9f7d94366dfca1f1e14904b93ff39ba10b259e368434a2820cf60706e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e18abfdefd4c116095d1684f0ca5eb0f056ee38f2bb5632f668f4036f6852204",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2017-12-21T14:57:16Z",
    "title_canon_sha256": "1b13c588a7814662cf9046cfe94706ab27ac21cb25a33c1d005d6e3f17aaec84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07987",
    "kind": "arxiv",
    "version": 2
  }
}