s.appendString(v.str())
	case KindInt64:
		*s.buf = strconv.AppendInt(*s.buf, v.Int64(), 10)
	case KindUint64:
		*s.buf = strconv.AppendUint(*s.buf, v.Uint64(), 10)
	case KindFloat64:
		// json.Marshal is funny about floats; it doesn't
		// always match strconv.AppendFloat. So just call it.
		// That's expensive, but floats are rare.
		if err := appendJSONMarshal(s.buf, v.Float64()); err != nil {
			return err
		}

	}
	vkey, err := note.NewVerifier(key[0])
	if err != nil {
		return "", nil, fmt.Errorf("invalid GOSUMDB: %v", err)
	}
	name := vkey.Name()

	// No funny business in the database name.
	direct, err := url.Parse("https://" + name)