message: Fix username case-sensitivity for GitHub proofs.
diff: @@ -10,7 +10,8 @@ class Github extends Service {
  static getProofUrl(proof: Object) {
  const baseUrls = this.getBaseUrls()
  for (let i = 0; i < baseUrls.length; i++) {
  - if (proof.proof_url.toLowerCase().startsWith(`${baseUrls[i]}${proof.identifier}`)) {
  + const requiredPrefix = `${baseUrls[i]}${proof.identifier}`.toLowerCase()
  + if (proof.proof_url.toLowerCase().startsWith(requiredPrefix)) {
  const raw = proof.proof_url.endsWith('/') ? 'raw' : '/raw'
  return `${proof.proof_url}${raw}`
  }
  