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Q7 - Anchor host distribution

The IO vote set contains 928 vote rationales with anchors. The top host is most-brass-sun.quicknode-ipfs.com with 422 rationales: about 45% of anchored IO vote rationales.

Host Vote rationales
most-brass-sun.quicknode-ipfs.com 422
raw.githubusercontent.com 75
ipfs.blockfrost.dev 18
bafkreictyichsdlpv3yomwqtbpk57e52hwijqn3bavbsi2jg2h5tzdpjdu 10
adastat.net 9
bafkreiaabwy5svzdd4peax2oxuv32enit2epyrzpevea6egzpr77unmllq 9
bafkreig3lbyratuaql2jtv5vxhbojpwi5brnmjdxm5ztijpmjlytrmqkhy 9
bafkreihn2injrckbqyste6xetsgninwyeyx2l5udz47o3okqgb4j6x3a54 9
brock.tools 9
gateway.pinata.cloud 9
314pool.com 8
QmTKPNQaAxyM1KeoGCPNsUTYgyDo8jeYm4F1YdjDL8b1BX 8 
PREFIX cardano: <https://lambdasistemi.github.io/cardano-ledger-rdf/vocab/cardano#>
SELECT ?host (COUNT(?vote) AS ?n)
WHERE {
  ?vote a cardano:Vote ;
        cardano:hasVotingAction ?action ;
        cardano:hasAnchor/cardano:anchorUrl ?url .
  ?action cardano:hasTxId/cardano:bytesHex "73e171a4c0730b4b59ecae271ab89f12a9d56360b02920e1f95107dbdc1d6762" .
  BIND(REPLACE(STR(?url), "^[a-z]+://([^/]+).*", "$1") AS ?host)
}
GROUP BY ?host
ORDER BY DESC(?n)
LIMIT 12

The denominator is:

PREFIX cardano: <https://lambdasistemi.github.io/cardano-ledger-rdf/vocab/cardano#>
SELECT (COUNT(?vote) AS ?totalAnchoredVotes)
WHERE {
  ?vote a cardano:Vote ;
        cardano:hasVotingAction ?action ;
        cardano:hasAnchor/cardano:anchorUrl ?url .
  ?action cardano:hasTxId/cardano:bytesHex "73e171a4c0730b4b59ecae271ab89f12a9d56360b02920e1f95107dbdc1d6762" .
}

Observed result: top host most-brass-sun.quicknode-ipfs.com = 422; denominator totalAnchoredVotes = 928.

The host regex ^[a-z]+://([^/]+).* extracts the authority component of URLs with a host/path shape. For ipfs://<cid> URLs there is no host segment, so REPLACE leaves the input unchanged and the row's "host" appears as the bare CID (e.g. bafkrei... or Qm...). Those rows are the gatewayless IPFS rationales; they are not a real per-host bucket.

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