Pith Number

pith:AWR3UN2U

pith:2016:AWR3UN2UA7F67ZULZMP2UGO5BD

not attested not anchored not stored refs pending

The Source of Solar Energy, ca. 1840-1910: From Meteoric Hypothesis to Radioactive Speculations

Helge Kragh

arxiv:1609.02834 v1 · 2016-09-09 · physics.hist-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{AWR3UN2UA7F67ZULZMP2UGO5BD}

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	2026-05-18T00:57:26.072014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05a3ba375407cbefe68bcb1faa19dd08cd391edf1e0398284b57e7716004da6e

Aliases

arxiv: 1609.02834 · arxiv_version: 1609.02834v1 · doi: 10.48550/arxiv.1609.02834 · pith_short_12: AWR3UN2UA7F6 · pith_short_16: AWR3UN2UA7F67ZUL · pith_short_8: AWR3UN2U

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/AWR3UN2UA7F67ZULZMP2UGO5BD \
  | 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: 05a3ba375407cbefe68bcb1faa19dd08cd391edf1e0398284b57e7716004da6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c7f2f597504929d1604b2d68956405d70f8c9c1a06e9f66e9f22bd7cba7e261",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2016-09-09T15:31:58Z",
    "title_canon_sha256": "fd54f3fb84477279af4c29a8ede30c94bbf60b44b483daca4e96be00e6e26a55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.02834",
    "kind": "arxiv",
    "version": 1
  }
}