Pith Number

pith:ECYQQKKG

pith:2018:ECYQQKKGKA5LQJRYULQHAIQYIN

not attested not anchored not stored refs pending

Absolute velocity measurements in sunspot umbrae

H.-P. Doerr, J. L\"ohner-B\"ottcher, R. Holzwarth, R. Schlichenmaier, T. Steinmetz, W. Schmidt

arxiv:1804.08304 v1 · 2018-04-23 · astro-ph.SR

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

Receipt and verification

First computed	2026-05-18T00:06:04.273443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20b1082946503ab82638a2e0702218434b96bfe359b1962ea9e81f0df7c68372

Aliases

arxiv: 1804.08304 · arxiv_version: 1804.08304v1 · doi: 10.48550/arxiv.1804.08304 · pith_short_12: ECYQQKKGKA5L · pith_short_16: ECYQQKKGKA5LQJRY · pith_short_8: ECYQQKKG

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/ECYQQKKGKA5LQJRYULQHAIQYIN \
  | 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: 20b1082946503ab82638a2e0702218434b96bfe359b1962ea9e81f0df7c68372

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c57415f8e0a9863555035597f23a634e5005b5a2aef9fa3839c7d46b3a4969b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-23T09:27:33Z",
    "title_canon_sha256": "329bb278680197ed21abe1751207df177cde07a16d4f28f1d16d555f4a73784c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08304",
    "kind": "arxiv",
    "version": 1
  }
}